The upper body is thin, the thighs are especially thick may be because often eat fried food, sedentary, less exercise, etc. caused by the formation of leg fat accumulation, you can improve the symptoms through diet, exercise, liposuction, etc. 1, diet: for obese patients, should actively adjust the lifestyle to low energy, low fat, moderate protein diet, limit calorie intake, long-term balanced diet as the dietary principles. Can eat high-quality protein such as lean meat, eggs, fish, dairy, beans and soy products, etc., more vegetables, fruits, cereals and other fiber-rich food, limit the intake of sugar, such as white sugar, chocolate, etc.; 2, exercise: long jogging or brisk walking, will make the leg muscles for a long time oxygen consumption, further consumption of thigh fat, you can also do yoga or other movements for thigh parts training, can make 3, liposuction: if the diet and exercise can not improve the upper body thin, thighs are particularly thick, you can go to professional medical institutions to perform liposuction to improve. But liposuction is surgery, surgery there are risks, such as skin necrosis, bleeding and other complications, whether these risks are worth taking, it is recommended that patients should consider clearly before deciding.