Between 1988 and 1994, 78 cases (183 tendons) of flexor tendon injuries of the hand were repaired by microsurgical techique. The patients were followed up from4 to 6 months. The results were assessed according to the grading method of TAM. In 36 cases, 78 tendons were repaired by microsurgical suture and the excellentgood rate reached 76.2 per cent and the other 42 cases, 105 tendons were repaired with biological memberane wrapped arround the anastomotic site following microsurgical suture, in which, 32 cases, 77 tendons were followed up and the excellentgood rate was 89.5 per cent. The curative effect between the two groups hadsignificant difference statistically (Plt;0.05). Those cases with a bad results were mainly those injuries occurred in Zone II which had very poor soft tissue condition of the palm and thoes old cases having extensive scar tissue formation surrounding the tendon bed.