(1) Good orthodontic treatment depends on the patient’s cooperation, so during the entire treatment must strictly comply with the medical advice, which is the basic premise. (2) During orthodontic treatment, most patients will experience different degrees of discomfort such as tooth soreness and swelling, and feel that their teeth are “soft” and they cannot bite hard objects, but the degree of discomfort varies from person to person. Generally speaking, the pain or discomfort usually appears in the first wearing of orthodontic appliances and each time after the review of the force 2-3 hours, 1-3 days is the most obvious, 4-5 days after the gradual reduction of the general one week after the basic disappearance. Some methods can be taken to relieve the pain, such as gargling warm salt water, eating softer, easy-to-chew foods, etc. (3) When wearing orthodontic appliances for the first time, the friction of orthodontic appliances may cause some ulcers on the oral mucosa, causing pain. Generally, the ulcers can be healed by themselves in two weeks, and some medicines for treating ulcers can also be assisted, or special mucous membrane protection wax can be used. (4) During the period of wearing orthodontic appliances, don’t “chew” things with teeth. Like fruits and other large pieces of food can be peeled into small pieces with a knife, chicken legs, ribs, etc. Pick off the meat to eat; less snacks; avoid eating too hard and nuclear food such as: dried bread, hard candy, beef jerky, nuts, plums, etc., these foods are easy to cause bracket damage, fall off, but also easy to make the archwire deformation; don’t drink carbonated beverages, avoid eating sugary and sticky food, in order not to cause dental caries or bracket off; correct biting pencil, eraser, or special mucosal protection wax; correct biting pencil and eraser. Correct bad habits such as biting pencils, erasers, nails, etc., which often cause brackets to fall off and be damaged. (5) During the period of wearing orthodontic appliances, it is very important to maintain good oral hygiene. For movable orthodontic appliances, it is relatively simple to keep hygiene: brush your teeth after each meal and brush the inside and outside of the orthodontic appliances, and then put them on. Fixed orthodontic appliances, it is relatively difficult to maintain hygiene: the blockage of the orthodontic appliances makes the teeth not easy to be cleaned, it is necessary to make sure that every time after eating to brush the teeth in time, choose soft bristles, small head of the toothbrush, focusing on cleaning the teeth around the brackets and the gum margins, brushing the teeth, and then you can use the gap brush to brush the arches of the wire under the not easy to brush the place to clean up, you can also use the flosser rinse, to remove the stagnation of the food clumps. For children patients, parents should guide and supervise their diet, oral hygiene and urge them to seriously cooperate with the doctor’s treatment to ensure that orthodontic treatment is carried out smoothly.