The research aims to identify the values of multiple variables of electromyography activity for some of the upper body muscles working in the forehand diagonal and straight strokes of table tennis for men and the difference between them. The descriptive approach was used in both analytical and comparative methods. The sample consisted of (6) advanced players. After reviewing a number of sources that used the ball throwing device, the most frequent test in the diagonal and straight research was chosen which is the front stroke tests (diagonal and straight) in table tennis. EMG was used to following muscles: Wrist FlexorBiceps-Pectorals Major-Posterior part Deltoid-Trapezius-Rectus Abdominals. The researcher used arithmetic mean, standard deviation, and Wilcoxon matched-paired single range nonparametric statistical test. The following conclusions were reached :1-The significant differences in the Forehand strikes between the diagonal and straight strikes were in (3) variables, as it was in favor of the diagonal frontal strikes. 2-The differences in the Forehand strikes between the diagonal and straight strikes were in (34) variables, as it was in favor of the diagonal frontal strikes (18) variables and in favor of the frontal straight strokes (16) variables.