Health and support of tissue is the basis for achieving excellent, safe and efficient orthodontic treatment outcome, which also guarantees the esthetics, stability and function of treatment objectives. The support of healthy tissue contributes to the stability of teeth. Orthodontic treatment also requires adaptive reconstruction during tooth movement. Well-aligned teeth and balanced occlusion play an important role in maintaining and improving homeostasis. Healthy orthodontic treatment can improve the health of structure and functions, which has to rely on the existence and reconstruction of healthy tissue. Therefore, orthodontics and health have dialectically close association and mutual maintenance. Favorable periodontal support and escort is indispensable for healthy orthodontic treatment.