Cisatracurium besylate lyophilized preparation composition stable at room temperature and preparation method thereof

The invention relates to a Cisatracurium besylate lyophilized preparation composition stable at room temperature and a preparation method thereof. The lyophilized preparation contains benzene sulfonic acid Cisatracurium besylate and a lyophilization excipient, a weight ratio of the lyophilization excipient to the benzene sulfonic acid Cisatracurium besylate (W / W) is 1:1-5:1. The lyophilized preparation overcomes the defect of cryopreservation of an existing lyophilized preparation, and is convenient for hospitals and patients for storage. The lyophilized preparation is used for muscle relaxation for operation patients.