The border between Hong Kong and mainland China is one of the most-used international crossings in the world — but it has quirks that catch first-time crossers off guard. Separate immigration systems, different payment norms, and different rules for what you can bring across all come into play.
This guide covers the main crossing points, what documents you need, and the practical things to know before you go.
The Key Thing to Understand First
Hong Kong and mainland China are separate jurisdictions with separate immigration controls. Even if you have a valid visa for one, it does not automatically grant you entry to the other.
What this means in practice:
- If you have a China visa, it does not cover Hong Kong
- If you have a Hong Kong visa or arrived in Hong Kong visa-free, that does not let you enter mainland China
- You need separate permission for each side
For most visitors crossing into mainland China from Hong Kong, you need:
- A valid China visa (or to be a national of a country currently eligible for visa-free entry)
- A valid passport
Visa-Free Entry to China: Does It Apply?
As of 2026, China has expanded visa-free access to citizens of many countries — but the rules change. Always verify your eligibility at the official Chinese embassy website or directly with CIQ (Customs and Immigration in China) before you travel.
Commonly eligible countries for 15–30 day visa-free entry include many European nations, Japan, Singapore, Australia, and others. The US, UK, and Canada are not on the standard visa-free list as of this writing — US, UK, and Canadian nationals need a visa.
Main Border Crossings
1. West Kowloon → Shenzhen North (High-Speed Rail)
The most popular crossing for travelers. You board the high-speed train (G or C class) from West Kowloon Station in Hong Kong and arrive at Shenzhen North Station in about 20 minutes, or other mainland cities in longer journey times.
What makes it different: The immigration clearance happens entirely within the West Kowloon Station terminal — you clear both Hong Kong departure and mainland China entry before boarding. This is called a "co-location" arrangement.
Good for: First-time crossers, those continuing to other Chinese cities by rail, those with luggage.
Book tickets: Via hkgotv.hk (Hong Kong ticketing) or the 12306 app.
2. Lo Wu (Luohu) — MTR East Rail Line
Take the MTR East Rail Line to Lo Wu (the terminal station), cross on foot, and arrive at Shenzhen Luohu Station on the mainland side.
Good for: Travelers who want flexibility, don't want to book rail tickets in advance, and are comfortable with the on-foot crossing.
Note: Lo Wu is a high-volume crossing and can have long queues, especially on weekends, public holidays, and Friday/Sunday evenings.
3. Lok Ma Chau / Huanggang
- Lok Ma Chau connects by MTR Tung Chung Line to Lok Ma Chau station, then cross to Huanggang on the mainland
- Huanggang crossing is open 24 hours (unlike most other crossings)
Good for: Late-night crossings, returning travelers.
4. Shenzhen Bay (深圳湾/Deep Bay)
Bus and vehicle crossing between Yuen Long (NT, Hong Kong) and Shekou (Shenzhen). Less common for individual travelers but used for coaches and cross-border buses.
5. Macau → Zhuhai
If you're coming from Macau, the Gongbei border crossing (or the Hengqin port) connects you to Zhuhai on the mainland side. Macau to Zhuhai crossing has its own set of rules — worth noting if your route goes through Macau.
What to Expect at the Crossing
Process overview
- Hong Kong departure — Present Hong Kong Arrival Card (if you have one) and passport. Exit stamp.
- China entry — Fill out Arrival/Departure Card (if required for your nationality, some are now pre-registered), present passport and visa, fingerprint scan, photo. Entry stamp.
- Customs — Walk through. Declare as required.
The whole process takes 15–45 minutes for most travelers at off-peak times. At peak times (especially Lo Wu on a Friday evening), expect 1–3 hours.
What you'll need at immigration
- Passport (valid, with visa if required)
- Completed arrival card (some nationalities get pre-cleared; ask at the desk if unsure)
- Hotel booking or onward travel evidence may be requested
- Your phone with a China SIM or eSIM ready is useful to have set up before you cross
Prohibited items when entering China
China's customs rules apply at the border:
- Firearms, ammunition — prohibited
- Most fresh fruits and vegetables from certain regions — restricted
- Large amounts of cash (above USD 5,000 equivalent or RMB 20,000) must be declared
- Certain medications in large quantities (especially controlled substances)
For a complete list, see our China Customs Rules guide.
Payments: What Changes When You Cross
Hong Kong uses HKD. Mainland China operates on RMB (¥).
- Hong Kong dollars are not accepted in mainland China
- Credit cards work in some mainland venues but not everywhere
- For mainland China, your best setup is Alipay International (linked to a foreign card) or WeChat Pay
Set up Alipay before your trip or while still in Hong Kong — the Hong Kong app ecosystem accepts your foreign number and card for registration, and the international version of Alipay works in mainland China.
See: How to Use Alipay International Version
Phone and Internet: What Changes When You Cross
When you cross into mainland China:
- Google, WhatsApp, Instagram, Facebook, and most Western apps stop working
- WeChat works on both sides
- Hong Kong SIM cards may work on roaming in mainland China but at poor speeds or high cost
- Best solution: Get a China eSIM or SIM card before or just after you cross
The mainland has its own internet ecosystem. Apps you rely on in Hong Kong will fail on the mainland side. Download offline maps (AMap / Amap for navigation, or Apple Maps) and set up WeChat Pay before you cross.
See: How to Stay Connected in China as a Tourist
Common Mistakes at the Border
Not checking visa requirements before you go. The rules change. Verify every trip.
Crossing at peak times without planning. Lo Wu on a Friday evening or Sunday night has some of the longest queues in the world. Use West Kowloon/high-speed rail or plan around off-peak times.
Not setting up payments before crossing. Mainland China's payment ecosystem is largely Alipay/WeChat. Set up before you arrive.
Forgetting that your Hong Kong phone plan may not work. Check your carrier's mainland roaming policy. Many travelers get a China SIM or eSIM at a carrier shop just past the border checkpoint.
Assuming Google Maps works on the mainland. It doesn't reliably. Download AMap before you cross.
Get More Help
If you're crossing into mainland China for medical treatment, or if you need help navigating the logistics of arriving in China as a foreigner, ChinaEasey's travel support is there to help.
We handle a lot of questions about crossing logistics for medical travelers — people arriving from Hong Kong, connecting through Shenzhen to other cities, or figuring out the best route to hospitals in Beijing, Shanghai, or Guangzhou from a Hong Kong arrival point.
Related Guides
Need more than the guide?
This guide covers the basics. If real-world friction shows up, you can compare the support options and choose the level of human backup that fits your trip.