What do I need to prepare to apply for a US tourist visa? What should be written in the format and content of the work certificate?

you can find a travel agency to join a package tour, or you can apply by yourself. To apply by yourself:

prepare a photo, fill out the DS-16 form online and upload it, buy a telephone reservation card to make an appointment for an interview, and CITIC Bank will pay a visa fee of about 9 yuan, then bring your passport, DS-16 form confirmation page, visa fee receipt, a photo, travel itinerary, work certificate and real estate license (if you have a deposit, a car, you need to

If you are single and have no real estate, you are advised not to apply for it yourself. It is very likely that you will refuse the visa.

The format of the work certificate is as follows:

Certification

This is to certify that XXXX, male, is currently working in XXXXXX, with a monthly income of about RMB XXXXXX. We agree that this person will travel to the United States (or visit relatives) from XX to XX, and the expenses of this trip will be borne by XXX himself, and he will be guaranteed to abide by local laws and return to China on time to continue his post. If you have any questions, please call us at XXXXXXXX. XXXXXx company XXXX year x month x day

Certificate

M D, xxxx

this is to confirm that Mr. xxxx is working in our company, holding the position of xxxx, with monthly income of XXXXX RMB. We are aware that he will take a tour to USA from XX to XX, XXXX， to visit and take care his XXXX. His travel expenses will be responsibilities of himself. We guarantee that he will obey the local laws and return to China on time to resume his position. If you have any questions, please contact us at xxxxxxxx.

xxxxxxxx Co., Ltd.

Add: Tel: xxxxfax: xxxx

Just suggestions, I wish you success.