You need submit following documents to Chinese embassy or consulate the consular district where you location belongs to:
1. The original passport with a validity more than six months and enough blank visa pages;
2. One copy of completed visa application form in Chinese or English, attached with one of the applicant's recent colorful front pictures of upper body (30mm X 40mm)

If necessary, application for travel visa needs the certification of the applicant's identity, round-trip (vehicle, ship) ticket or travel check or bank saving statement.