Based on WANG Xugao's “thirty methods of treating the liver”， it is believed that the occurrence and development of childhood tic disorders follow the dynamic progression from liver

qi

disease to liver fire disease and then liver wind disease. The basic pathogenesis of three stages are characterized by binding constraint of liver

qi

， liver fire hyperactivity， and internal stirring of liver wind. Moreover， liver-blood deficiency and stagnation， and malnutrition of liver

yin

as the main point in terms of the imbalance of liver

qi

， blood，

yin

， and

yang

should be considered， as well as the imbalance relationship of the five

zang

organs such as the involvement of other organs and the gradually reach of the other organs. Guided by the principles of “thirty methods of treating the liver”， the treatment of tic disorders in liver

qi

stage should focus on soothing the liver and rectifying

qi

， soothing the liver and unblocking the collaterals， using

Xiaochaihu Decoction

（小柴胡汤） and

Sini Powder

（四逆散）. The treatment of tic disorders in liver fire stage involves clearing， draining and resolving liver heat， using

Longdan Xiegan Decoction

（龙胆泻肝汤）

， Xieqing Pill

（泻青丸）

， Danggui Longhui Pill

（当归龙荟丸）

，

and

Huagan Decoction

（化肝煎）

.

The treatment of tic disorders in liver wind stage involves extinguishing wind and subduing

yang

， using

Lingjiao Gouteng Decoction

（羚角钩藤汤） and

Liuwei Dihuang Pill

（六味地黄丸）. Throughout the treatment process， attention should be paid to harmonizing the liver's

qi

， blood，

yin

， and

yang

， as well as addressing the pathology of other organs.