Disclosed is a single-liquid pharmaceutical composition for injection containing docetaxel (formula 1) controlled in a pH range of 3.0 to 5.0, consisting of (A) docetaxel or pharmaceutically acceptable salts thereof； (B) a surfactant selected from the group consisting of polysorbate, polyoxyethylene glycol ester and polyoxyethylene castor oil derivatives； (C) an anhydrous ethanol in a concentration range of 100 to 800 mglml； and (D) a pH adjustor selected from the group consisting of citric acid, fumaric acid, lactic acid, stannic acid, succinic acid, maleic acid, acetic acid, tartaric acid, and phosphoric acid.
