Purpose: The present study investigated the effect of plyometric exercises on the improvement of perceptual-motor and physical proficiency abilities of lifeguards after a period of no training during the outbreak of covid-19 in Tehran province. Methods: This study is semi-experimental. The statistical population of active female lifeguards of the swimming team of Tehran province with the age range of 20-25 years who met the conditions to enter the research was formed. 24 people were selected as an available sample and then were divided into two groups of 12 people; experimental and control using random method. The experimental group did plyometric exercises in the form of selective jumping movements, including in 3 sets of 10 repetitions of lunges with legs. Right-20 high knee jump-opposite leg Repetition, then in 3 sets of 10 repetitions of breaststroke up-20 high knee jumps-repetitions, finally, in 3 sets of 10 correct repetitions of squats-20 high knee jumps-repetitions was chosen. The experimental group performed their own exercises during a period of 4 weeks with 3 sessions, a total of 12 sessions of plyometric exercises. And the control group only participated in the pre-test and post-test. The research variables included reaction time, explosive power and Coordination of gross body movements (dive length). In order to measure the perceptual ability (response speed from the 8-way reaction time device, in order to measure the motor ability (explosive power) of the rescuers from Ergo jump explosive power measurement device was used by Bosco's frequency jump method, the number of jumps in 30 seconds, and the dive length test was used to check physical proficiency (Coordination of gross body movements). Covariance analysis was used to test the hypotheses. Results: The findings showed that plyometric exercises had a significant difference in the post-test compared to the pre-test on all three investigated variables (p<0.05). Therefore, the finding of this research suggest that plyometric exercises can have an effect on improving the motor perception abilities and physical skills of lifeguards during the non- training period.