The study sought to investigate the impact of plyometric and core strength training packages on selected psychological parameters among college men basketball players. To achieve the purpose of the study (N=60) sixty men basketball players were selected from National college, Tiruchirappalli, Tamilnadu, India as subjects. The age of the subjects ranged from 19 to 25 years. The selected subjects were divided into three equal groups (N=20). Group I underwent plyometric training. Group II underwent core strength training. Group III acted as control group who did not undergo any specialized training program other than their daily routine. The psychological parameters such as sports achievement motivation, state anxiety, self-confidence were selected as dependent variables and they were assessed by 20- item self- evaluation questionnaire, the scale includes 20 statements, rosenberg self-esteem scale respectively. The subjects were concerned with their particular training for a period of six weeks, three days per week. The collected data from three groups prior to and immediately after the training programme on selected criterion variables were statistically analyzed with analysis of covariance (ANCOVA). The level of confidence was fixed at 0.05 for all the cases to test the hypothesis. The result of the study reveals that the plyometric training and core strength training groups achieved significant improvement on selected psychological parameters such as sports achievement motivation, state anxiety, self-confidenceof college men basketball players