Objective: Sub mental fat accumulation and skin laxity is a sign of an aging neck and is a frequent concern of the cosmetic patients. Attempts to reduce this problem through diet and exercise alone are usually unsuccessful. Various cosmetic surgical procedure have been tried to reshape the lower aspect of the face like Traditional liposuction. Methods such as ultrasound-assisted liposuction, power assisted liposuction and laser-assisted liposuction aimed to reduce the side effects of the older methods. the most commonly advantages of these newly presented procedures include: diminished post-operative pain and recovery period, decreased extent of edema and bruising and blood loss that accompanied liposuction. Technological advances such as laser Diodes are now available in small and reliable packages at various wavelengths including 810,915,940,980 and studies showed that it can be a safe, effective and reproducible alternative to conventional liposuction. While treatment of skin laxity seems to be more important components than body contouring in submental area, a procedure that can induce collagen production and skin contraction is a better option. Method: the patients is categorized into two groups by the computer randomization program: group 1 undergo 980 nm diode laser lipolysis (LAL) (n=20) and aspiration and group 2 undergo liposuction alone (n=20). On the day of procedure, the area of target treatment is marked. Then patients are prep and draped in sterile fashion. Local tumescent anesthesia is composed of 1000 cc sodium chloride 0.9%, 100 cc lidocaine 1%, and 1cc epinephrine 1:1000. A total tumescent of 200-300cc is delivered to the submental area. Upon delivery of tumescent, an incision of 1-3mm is created at the target treatment area for the introduction of cannula. The 980nm diode laser (pharaon,OSYRIS, hellemmes,France) is used in continuous emission mode with power of 6-8 W. Laser energy is transmitted using a 600µm optical fiber encased in a 1 mm diameter microcannula through the incision into the subcutaneous fat moving at the rate at least of 1cm/s. the microcannula is moved in a backward and forward fan-like motion in the horizontal plane to achieve homogenous distribution of the laser energy. The treated area is held by operator's hand to attenuate the resistance of tissue and manually measure the skin temperature. When laser energy delivery is complete, the liquefied fat was aspirated with a 3mm cannula. Patients are evaluated at baseline, 1 week, 1 month, and 3 months after the procedure. At each visit they are photographed and clinically assessed by treating physician. The average fat thickness tissue is measured by ultrasonographic device at baseline and 1 month visit.