The research aims to identify the most important offensive and defensive technical errors that players commit during handball matches and get to know the extent of their relationship to some psychological variables (emotional arousal - some aspects of attention) The researcher used the method and the research community represents the Premier League A players in handball as they represent the highest level of performance in the handball league The research sample was chosen intentionally by handball players, who are participants in the Premier League championship, namely (Al-Ahly - Zamalek - Sporting - Aviation - Olympic - Ismaili representing the first category) for the sports season 1998/1999 and the research sample reached (60) players by (10) players from each team The most important results were: 1- The emotional arousal rates and the manifestations of attention (focus - intensity) of the handball player increase between the two matches before the match. 2- By decreasing the hand attention distribution of handball players between the two halves of them before the match 3- Offensive mistakes in the correction are the most common mistakes made between the two players. It is corrected (a shot bounced from the defense or the post, a shot outside the field, a shot caught by the goalkeeper) The prevalence rates ranged from (20.19% - 10.92%) 4- The least common offensive errors were (pass-through, ineffective bouncing, unsuccessful deception that caused the ball to be lost) and the ratio ranged between (3.85% - 6.22%) 5- The most common defensive errors in the research sample players (slow return to the defense area, failure to take possession of the ball, caused a gap in the defense) rates ranged between (16.08% - 14.85%) 6- The least common defensive mistakes among the players in the research sample (causing a penalty throw, a mistake that required a defeat, overcoming the defender with a successful deception of the opponent) at rates ranging between (2.40% - 6.24%) 7- The occurrence of offensive errors is directly related to the emotional arousal of the players, while inversely related to the focus of attention 9- The occurrence of defensive errors is directly related to distributing attention to players, while inversely related to focusing attention