Scalp encryption implant surgery is a precise surgical procedure, whose operation is limited to the superficial surface of the scalp and will not damage important blood vessels and nerves, with little surgical trauma and no adverse reactions in general. However, the head encryption implantation surgery is invasive surgery, in the treatment, can be caused by the patient’s skin conditions, hospital treatment equipment and operating equipment personnel technology and other factors, resulting in a variety of different adverse reactions, including: 1, the operation requires anesthesia, and anesthetic drugs have certain toxic side effects, if the doctor for the injection dose of anesthetic drugs can not be well controlled, serious cases can lead to breathing, body temperature, blood pressure abnormalities 2.If aseptic operation is not strictly observed during the operation, it may cause infection; 3.The excessive amount of one-time hair transplantation may cause rejection reaction, such as redness, swelling, heat and pain, and in serious cases, insomnia, dreaminess, headache and other symptoms; 4.If the hair follicles are not handled properly during the hair unit extraction process, it may produce local granuloma-like reaction; 5.The preoperative examination is not meticulous, resulting in patients with contraindications to surgery receiving 5, the preoperative examination is not meticulous, resulting in patients with contraindications to the surgery receiving the top of the head encryption implantation surgery, which can lead to serious adverse reactions, such as patients with bleeding disorders, the surgery may lead to bleeding, etc.; 6, the implantation process is not technically proficient, damaging its own hair follicles, and the newly planted hair does not survive, resulting in increased scarring and increased hair thinning; 7, hair loss at the hair extraction, scar growth, scalp numbness, etc. Therefore, in order to minimize the risk of surgery, it is recommended that candidates go to regular hospitals for surgery.