Objective: To explore the effects of pubertal timing on eating disorders among adolescents in Bengbu. Methods: Totally 831 students from grade five to eight in two nine-year schools were selected and surveyed with Pubertal Development Scale (PDS) and Eating Disorder Inventory(EDI). Results: The score of female on drive for thinness and body dissatisfaction was higher than male’s. The score of different grade on drive for thinness, bulimia, perfectionism,maturity fears and ineffectiveness was significant difference between them(P<0.05 ).The score of interpersonal distrust was highest in delay pubertal timing in schoolboys, and the score of drive for thinness，body dissatisfaction and diet of schoolgirl in early pubertal timing was highest，there was significant difference between them(F=2.68，4.87，6.46，3.07，5.49，P<0.05 ). Conclusion There are close relationship between the pubertal timing and eating disorders.The eating disorders will be offected in early and delay pubertal timing of adolescents.