目的:总结施行股前外侧皮瓣（ALTF）移植手术中所发现的斜支血管情况及斜支“陷阱”的处理。方法:2017年5月-2019年10月,共施行ALTF手术治疗患者30例,术前完善CTA检查,初步确定ALTF血管来源情况；术中采用“三纵五横法”进行皮瓣定位及设计,注意斜支位置及解剖斜支血管,避免损伤斜支,探查、分离斜支血管；根据术中斜支血管与降支血管的关系,切取1~2处血管蒂；对2处血管蒂者分别进行夹闭试验,确定动脉血供情况；根据血液循环状况对血管蒂静脉超引流处理。术后常规抗感染、抗凝、抗痉挛处理,密切观察术后皮瓣血运、皮温、肿胀程度、渗液情况、皮瓣成活状况,定期随访。结果:30例ALTF中,术前CTA检查发现13例存在斜支,术中共有11例存在斜支血管并进入皮瓣,出现率为36.6%。所有斜支均完整保留,其中8例切取了2处血管蒂,并采用了静脉超引流技术处理血管蒂,术后皮瓣血运良好、皮温与周围正常皮肤温度接近、皮瓣肿胀轻、渗液少,术后皮瓣完全成活,术区均一期愈合。术后随访3~32（平均16.1）个月,受区愈合良好,功能、外形满意；供区关节活动正常,局部感觉无明显缺失。结论:本组ALTF斜支血管约1/3病例出现,应尽可能保留,避免斜支“陷阱” 、合理处理斜支是保障手术成功的关键。“,”Objective:To summarize the oblique branches found in the transfer of anterolateral thigh flap (ALTF) and to handle the issues of oblique branch.Methods:Thirty patients who require surgery of ALTF transfer from May, 2017 to October, 2019 were enrolled. CTA examination was perfected prior surgery and the origin of ALTF vessels was preliminarily determined. During the surgery, Three-longitudinal-and-five-transverse methods were used to locate and design the flap. The ALTF was taken according to the flap design. Attention should be paid to the location of the oblique branch and the separation of the vessels of oblique branch to avoid a damage as much as possible. The vessels of oblique branch should be completely explored and separated. One or 2 vascular pedicles were cut according to whether the oblique branch vessels and the descending branch vessels were joined together during surgery. Clamping tests were carried out on the 2 vascular pedicles to determine an arterial blood supply. Super drainage of vascular pedicle veins according to the situation of blood circulation. After the surgery, routine treatment was carried out. Blood supply, skin temperature, swelling degree, exudation and survival of the flap were closely observed and regular follow-up was carried out.Results:Among the 30 ALTF examined by CTA, 13 patients were identified with oblique branch vessels before operation. During operation, 11 oblique branch vessels (The occurrencce rate was 36.6%)were found to enter the flap, and were completely preserved. Of the 11 identified oblique branch vessels, 8 had 2 vascular pedicles taken and the vascular pedicles were treated by venous super drainage technique. The postoperative blood supply of the flap was good; The skin temperature was closed to surrounding normal skin; Swelling of flap was minor and there was little seepage. The flaps all survived after surgery with stage one healing. Followed-up time was 3-32 (average 16.1) months. The recipient site healing was good, and the function and appearance were satisfactory. The joint movement at the donor site was normal, and there was no obvious loss of local sensation.Conclusion:More than one third of the oblique branches appear in this group. The oblique branch vessels should be preserved as much as possible to avoid issues in relation to the oblique branch. Reasonable handling of oblique branch is the key to the success of the surgery.