The purpose of the study was find out the effects of traditional circuit training and plyometric circuit training on selected physical fitness variables (speed, flexibility, muscular strength and muscular endurance) of the male school children’s. For the present study, sixty school students studying from Senior Secondary Model School Punjabi University Patiala were selected randomly as subjects. Their age ranged from 13 to 17. Twenty subjects were distributed into three equally groups. Control group (N=20), Group – I traditional circuit training (N=20),, group– II plyometric circuit training (N=20),. The experimental groups with varied load and velocity (intensity) underwent their respective training programme for three days in a week for eight weeks. Analysis of co-variance (ANCOVA) and Schefft’s post hoc tests were used to examine the significance between the variables for testing groups. The analysis was carried out using SPSS version in 21.0 and statistical significance was set to a priority at p ◻ 0.05.all physical fitness variables signifies improvement of traditional circuit training, plyometric circuit training and control group. The speed and flexibility no significant proved of between experimental groups and to be improved muscular strength and muscular endurance.