Abstract: Through comparative study of wild tom ato, the six resistance gene of tomato yellow leaf curl virus（TYLCV）were found and they were TY-1、TY-2、TY-3,TY-3a、TY-4 and TY-5. These resistant genes were found in the material from abroad. At present our country had bred more than 1 000 tomato varieties with TY virus resistance.The main measures of prevention of tomato yellow leaf curl virus（TYLCV） were strengthening resistance identification, popularizing varieties of strong resistance, strengthening field management, controling the spread of the virus and strengthening the treatment of center infected plant.