The main points and precautions for surgical dressing change include the following: 1. Before changing the dressing, it is necessary to communicate with the patient and understand the infection of the wound so as to better prepare the items needed for the dressing change, and at the same time, it is necessary to wash hands, wear a mask and a cap before the dressing change, and make aseptic preparation. 2. When changing the dressing, one of the two forceps touches the wound, and the other one does not touch the wound, and can only play the role of passing disinfectant cotton balls. 3.After dressing change, all medical waste must be sent to the designated medical waste bin, while avoiding in the household waste bin, thus causing secondary pollution in the hospital.