thanks for all help, first of all, the hair is not conforming figure ,I can only move it by dailing the x, y z. so it can't confirm to figure's head when doing animation, second, as i mention above,if i select the hair, I can't find the head for me to set the parent(for example, if the mil figure is "figure 1", when i select the hair and go to parent setting,then i see every figures, camerca, light,... are on the list ,but no "Figure 1". samething if I set mil boy as figure 2, then I can't find figure 2 at parent setting .that is my question.