Purpose of this study is effect of two short time exercise program by weight and plyometrictraining on vertical jump amount of Arak volleyball school Due to this purpose 21 player ; fromArak volleyball school have been selected; and divided in three group experimental weighttraining group ; with average (height 191.2 cm . weigh 73kg ; age 17.14 and control group withaverage (Height ; 190 cm . weight 70 kg ; age 17) and control group with average (Height 187cm . weight 68 ege ; age 16.7 ) randomly variables of this study have two short time program .on of them was weight training and other one was plyometrice ; witch each of them performedin four in four week ; and at each week three time . Results analysis at this survey by using of“T” test ANOVA. And scheffe test at level of(P<%5 ) is performed . Result showed that; (9%) ;in contrast with ; per test has increased . Form aspect of statistical “(p<%5) has beenmeaningful ; and amount of jump post rest contrast with per test in control group has notmeaningful change Also compare of per test and post test average ; between experimentalgroups has not shown any meaningful difference . However in aspect of descriptiveconsequence of ploymetric exercise was more than consequence of weigh training exercise(9%) in contrast with (7.67%( but ; statistically this difference was not meaning full . Then gainto this result that four week exercise; with ploymetric and weight training