Along with the examination of physical education and the national physique monitoring and testing carried out, more and more physical quality problems of primary and secondary school students received the social attention from all walks of life. Through the literature material method, test method, the method of data statistics , this article studied the varietal characteristics of the physical qualities from some junior high school students of grade 2012 and grade 2013 students in summer .The research results show that after the summer of 2014, the two grade students changed in speed quality, strength, endurance and flexibility to some extent, which speed quality, strength, endurance quality decreased obviously.