question about going to San ZHen need Visa?

You need to submit the visa requirements to Consulate General of China in Songkhla to obtain a visa before departure. Her is a list of requirements for tourist visa for your reference:
1. passport;
2. visa application form V2011A;
3. one recent passport photo
4. probably Round-trip Airline Ticket, Hotel Booking in China, Traveler's Check or the Bank Deposit Certificate.
5. Non-Thai citizens should provide valid Thai visa or residence permit or other document to prove their legal status in Thailand.