Vovinam is a Vietnamese traditional martial art and was recognized as the official sport at SeaGames 22nd held in Viet Nam in 2003. In competition, besides technical skills, tactical strategies, psychological state of the players in the pre- competition period can contribute to the players' achievements. Hence, the current study aims to explore pre-competition psychological state of Vovinam athletes and their achievements in a competition. and physical strength, the the relationship between the The present study researched on ten young male players of the army vovinam team in Ho Chi Minh City, Vietnam. To choose the appropriate tests for psychological check, a group of experts in the field, such as trainers and teachers in vovinam was recruited to give consultation via a questionnaire. As a result, the consultation group agreed on four tests employed to assess the psychological state in the pre-compettition stage of 10 young male athletes in Vovinam. The results show that those who held good psychological state gained better scores in the games. In the meantime, those who had the state of the hasty start or lost their attention held worse results. The research results helping the trainers adjust the training strategies to fix the psychological state of young male athletes of the army vovinam team before some games.