Mastodynia is a congenital lack of breast development or underdevelopment of one or both breasts after puberty, or complete lack of development. The breast size is disproportionate to the body size, due to incomplete breast development or endocrine disorders. It is common in women with weak constitution, insufficient endowment and introverted personality, and the development of breasts has a great relationship with estrogen. The following methods can be used: 1, incomplete breast development of people feasible Chinese medicine treatment, and with diet and massage therapy. Patients with completely underdeveloped breasts are preferred to surgery; 2, usually should pay attention to a relaxed mood, regular life, strengthen nutrition and physical exercise; 3, feasibility of hormone and ultrasound examination to understand the endocrine and breast gland situation, Chinese medicine regulation.