i want china visa for my mother to medical treatment in china .so plz tell me what procedure as

Poonam, your mother can apply for an S2 type for that.
First, she needs to prepare passport and copy of its data page, a completed application form, a passport-style photo, a diagnosis certificate from a hospital in China, an introduction letter from the ministry of foreign affairs of India, flight itinerary and bank savings account.
Next, go to the CVASC to submit the application.