Before surgery, we need to know whether the child has respiratory tract infection, cough, runny nose, if there is this phenomenon must be cured before surgery, otherwise laryngospasm and asphyxia will easily occur when basic anesthesia (such as ketamine) is chosen or the respiratory tract is not open and lack of oxygen during general anesthesia. The child’s skin is tender and unclean is an important cause of postoperative incisional infection, so the child should be bathed the day before surgery to remove skin dirt. If bathing is not possible due to illness, the skin of the operated area should also be washed with soap and water, and care should still be taken to keep it clean after surgery. At the same time, attention should be paid to the presence of eczema, ulcers and infections, and routine electrocardiogram and chest X-ray to understand the heart and lung condition. It is important to prepare for pediatric cryptorchidism surgery, and a good preparation will ensure a smooth operation. If the child has already made an appointment for surgery, and respiratory infection or eczema occurs during the waiting period, it needs to be treated in time so as not to impede the normal operation, and parents can contact me through the telephone consultation service to communicate whether the child’s condition requires postponement of the operation.