The model has two proportions: the first is the ratio of the head to the whole body. The normal proportion of the body and the head of the average person is - the head is one-eighth of the whole body, and the proportion of the model should be that the head is a little smaller than the normal proportion. If it is more than one-eighth, the other conditions will be balanced. The second is - the ratio of the length of the upper body to the lower body. The demarcation line between the upper and lower body takes the sacrum as the boundary. According to the characteristics of Chinese race, students can be admitted if the upper and lower body lengths are equal. The lower body is longer than the upper body, and the longer the legs, the better. There is a second measure. The upper body is measured from the Dazhui point to the hip line, and the lower body is measured from the hip line to the ankle bone. This measurement method is more beneficial to the clothing designer. The size of the clothing can be directly thought of, but it is difficult for other customers to imagine the body condition from the size. Therefore, both methods of measurement are required, but the distinction is given in the name of the ratio.