| At present, there're many data about the growth of children and adolescents, but most of the objects are the primary and middle school students of Han nationality. The study on the physical development characteristics and the growth level of Mongolian children and adolescents is quite deficient. The data of physical growth combining with psychological development has not been reported. The purpose of the study is to understand the growth status about this group of Mongolian students and compare the present situation of physical growth and psychological development with other groups. The present paper studied 1230 Mongolian students (598 boys and 632 girls) of 7～18 years old from the Mongolian primary and middle school in xilinhaote city of Xilinguole league from Inner Mongolia in September, 2005. This study included 12 physical characteristics and girls'menarche. Made questionnaire investigation on personality characteristic and life events of Mongolian students.The results are as the follows: (1) Various of physical indexes are increased with aging, but the amplitude and the speed of growth among all age groups are different. Double intersection phenomenon happens in most growth curves of boys and girls. In most indexes, sexual difference is remarkable among most of age groups. Boys'age of growth spurt of weight and height is 12 years old and girls'is 11. Boys'and girls'rapid growth period are 10～12 years old and 9～12 years old, respectively. (2) Along with the increased in age, boys'somatotypes change from ectomorphic mesomorph to mesomorph-ectomorph. The change of girls'somatotypes are the mesmorphic factor is relatively high to most of them are central, after 14 years old to the endomorph-mesomorph. The somatotypes of these students are similar to the rural students of Korean nationality. (3) Normal weight of Mongolian students in xilinguole is the dominant position. Few of them are malnutrition, overweight and obesity. The general nutritional status is well. (4) Compared Mongolian students of Xilinguole with Han nationality and Mongolian of China, Han nationality of urban-rural in Inner Mongolia, Mongolian of urban-rural in Tongliao, Mongolian of urban-rural in Bayannaoer league and Japanese students. The height growth of the students in xilinguole league is the middle and lower standard. The weight growth of boys is medium and the weight growth of girls is middle and high class. (5) The average age of menarche is 12.55 years old and it's earlier than other groups in our country. The rate of menarche is the highest in summer, winter is the second and spring is the lowest. (6) The personality type of Mongolian children and adolescents in Xilinguole league is mainly interstitial type. There're some differences between these students and nation norm. It shows that 10~14 years old boys are more steady and introverted. Both boys and girls who're 16~18 years are more extroverted and lively. (7) For the Mongolian boys and girls in xilinguole league, the highest rate of stressful life event is respectively obvious changes of life habits and learning problems. For the boys and girls, the factor of the highest absolute value of stress intensity score is study pressure. The second is interpersonal relations. (8) On personality characteristic and life events of Mongolian students in xilinguole league, there's significant difference to some extent among different grades, sexes and the number of brothers and sisters. There's also significant difference in personality characteristic among different origins. (9) The personality characteristic is significantly correlated with life events.In this paper, the growth data of Mongolian children and adolescents in xilinguole league were reported for the first time. The growth development of Mongolian students were discussed synthetically in physical development, skinfold thicknesses, somatotypes, menarche, nutritional status, personality characteristic and life events by means of physical growth combining with psychological development.
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