Abstract: Objective To evaluate the effect of arthroscopic inside-out suture on meniscal transverse injury. Methods Arthroscopic inside-out suture of meniscal transverse injury in 36 patients（37 knees）,including 26 males（27 knees）and 10 females at the age of 14-55 years（mean 29.5±11.1 years）,was retros pectively analyzed.Of the 36 patients,23 and 13 had lateral and medial meniscal injury,respectively.Twelve patients were complicated by ACL injury.The function of knee joints was scored with the Lysholm score system before and after operation. Results The patients were followed up for 2-52 months（mean 21.1±17.1 months）.No complication of blood vessel and nerve injury or infection occurred.The Lysholm score of knee joints was 31.1±6.3 before operation and 85.2±6.9 after operation（P＜0.001）.The excellent and good efficiency was 91.9%. Conclusion Arthroscopic inside-out suture is a simple and safe procedure for the repair of meniscal transverse injury.