Now I am traveling in Singapore with a China passport. Can I apply for a tourist visa to the United States in Singapore?

If you can't apply for a tourist visa to the United States in Singapore with a Singapore tourist visa, you can only go back to China first.

Only holders of long-term visas in Singapore can apply for visas to the United States at the US Consulate in Singapore.

After returning home, find a bigger travel agency, such as China Travel Service, Chunqiu, etc., and apply for a tourist visa to the United States through them. The required information includes ID card, household registration book, passport, work certificate, income certificate, capital certificate, etc.

You can go to the US Embassy in China yourself, but it is very demanding, troublesome and often rejected, so it is not recommended.