It is suggested that slimming needles can be applied, which is especially suitable for "stubborn" fat accumulated in the waist, abdomen and limbs. The slimming needle injects physiological saline, lidocaine, sodium bicarbonate and adrenaline into the fat layer according to a certain proportion, which can effectively promote the expansion and decomposition of the stubborn fat layer and make the fat more easily decomposed into fatty acids instead of providing energy for the body. Inject slimming needles to lose weight, generally every other day 1 time, at least twice a week, and choose 2 ~ 4 doses each time, and the injection amount should not exceed 320ml；; A course of treatment is about 8 times.