Mesotherapy is performed for obesity, plastic surgery and pain-care in many countries actively injecting small amount of medicine based on the theory that dermal layer, subcutaneous layer and muscle are same. Light weight and relatively small size make the hand easy to perform. Possible to use continuously since injecting device and control parts are separated. Practical and convenient cart makes performance easy at small room. Needle guider helps to control injecting depth. Micro process inside makes possible for various injection modes.