Abstract: By using data of the Shandong Province survey of studentsπphysical fitness and health from the years 1985, 1995 and 2005, the secular growth change of children and adolescents aged 7-18 were analyzed. In the past 20 years, the overall increments were 6.27cm (Urban male) , 5.02cm (Urban female), 7.62cm (Rural male) and 5.69cm (Rural female) for stature, and 9.97kg (Urban male), 6.02kg (Urban female) , 7.96kg (Rural male) and 4.87kg (Rural female) for weight, and 2.57kg/㎡ (Urban male), 1.46kg/㎡ (Urban female), 1.71kg/㎡ ( Rural male) and 0.93kg/㎡ ( Rural female) for body mass index. The difference of stature level between Urban and Rural youngster was reduce and body weight was increase. The increment of legs length index is bigger than sitting height.

Key words: Growth and development; Stature; Body weight; Adolescent