The aim of this study was to investigate the effect of 6 weeks of Suspension exercises with TRX On static and dynamic balance and landing mechanics in female athletes. The number of 30 young female athletes with the age range of 15 to 18 years from the fields of handball, futsal, basketball and volleyball were selected from the schools of 4 districts of Tehran and they were randomly placed in two experimental and control groups (15 people in each group). The experimental group performed suspension exercises with TRX for 6 weeks and 3 sessions per week. In order to measure static balance, stork test was used and for dynamic balance, Y balance test was used. Also, Landing Error Scoring System (LESS) was used to check landing mechanics. The results showed that the static balance, dynamic balance and landing mechanics of the TRX training group were better in the post-test than the pre-test (P<0.05). But there was no significant difference between static balance, dynamic balance and landing mechanics of the control group in pre-test and post-test (P>0.05). Also, the results of covariance analysis showed that there is a significant difference in all variables between the two groups in the post-test (P<0.05). So that the static and dynamic balance and reduction of the landing error score of the TRX training group were better than the control group. It seems that 6 weeks of suspension training with TRX can improve static and dynamic balance and reduce landing errors in female athletes.