Objective: To explore the application value of free latissimus dorsi bilobed flap repair technique in the treatment of limb soft tissue defects. Methods: Analyzed the basic data of patients with limb soft tissue defects who underwent surgical treatment in our hospital, and selected 20 cases for the study, implemented the free latissimus dorsi muscle bilobed flap repair technique to repair the patients, and counted the survival rate of the flap, the implementation of flap thinning, and the suture situation of the donor area after the operation. Results: (1) 18 of the 20 patients had full postoperative flap survival, and 2 had a small portion of necrosis at the distal end of the latissimus dorsi flap, which required a second stage of management. (2) 17 of the 20 patients underwent flap thinning because of flap bloat, and 3 did not require secondary surgery. (3) In 18 of the 20 patients, the donor area was sutured directly, and there was a linear scar after recovery; in 2 cases, a small amount of skin graft was needed to repair the donor area, and the grafts were found to be well-survived at follow-up, with no adverse effects or dysfunction. (4) The results of the final follow-up showed that all 20 patients reported good recovery of the activity of the affected limbs, and the appearance of the skin flap had good texture and shape, with high patient satisfaction. (5) The patients" quality of life scores were significantly improved after the intervention compared with those before the intervention, and the difference was obvious (P<0.05). Conclusion: The implementation of free latissimus dorsi bilobed flap repair technology for patients with limb soft tissue defects can effectively improve the quality of life of patients, enhance the quality of trauma recovery, and promote the recovery of patients as soon as possible, which has the application of reference value.