i just want to visit china with my family. we are 3 members. pls tell me the respective procedure.

Priyanka, are you Indian citizen? If so, you need to submit your application to the CVASC center that has jurisdiction over your living area. Before you go there, you should prepare the following documents:
1. original passport and a copy of the passport information page
2. filled application form affixed with a recent passport photo
3. round-trip air tickets and hotel booking