The invention discloses a modeling method of a human-body three-dimensional model. The modeling method comprises the following steps of S01, establishing a human-body-form three dimensional model database; S02, establishing a mathematical model of a body weight, a height, a human body form characteristic vector and a human-body three-dimensional model characteristic matrix; S03, acquiring a front side picture, a profile picture, a height and a body weight of a measured person; S04, acquiring the human-body three-dimensional model characteristic matrix of the measured person; and S05, establishing a human-body three-dimensional model of the measured person. In the invention, a user provides the front side picture, the profile picture, the height and the body weight so that human-body three-dimensional model modeling can be realized; and operation is simple, efficiency is high and accuracy is high too.