Training Control Theory is a planned and scientific method,which gives the players efficient controls,diagnoses,and evaluation during the training process. It helps players set a destined achievement. According to it,coaches can get fined amount datas,contrast reference,and a objective standard. They can have better control of players' advantages and defects to continue training and evaluating. Training Control Theory is one of the current,significant effect methods at present. This study took an example of players' physical capacity test in volleyball speciality. A proceed orderly regression was used to deal with mathematic datas. By simple calculating datas,we could evaluate and diagnose players' developing targets of physical capacity. This method is not only a base of training prescription but a new direction for research. Besides,as mars emphases are laid on scientific training,it's necessary to make researches into training control in volleyball speciality item by item some other time;such as to establish a mode of vertical jump. The method will scientifically and practically help us make researches or do training in volleyball speciality.