The precautions to be taken after playing hydrafacial injection include avoiding contact with irritating factors, strengthening local care, and adjusting the life and other aspects. 1. Avoid contact with irritating factors: hydrafacial injection needle needs to be injected into the dermis, is an invasive operation, if not careful care may lead to local skin infections, so after treatment need to pay attention to avoid contact with water, avoid sauna, exercise and other sweating heat, avoid high heat treatment and other irritating factors. 2. Strengthen local care: after the treatment of hydroponic needle, to strengthen the facial skin care, so as to help the skin to recover and achieve better therapeutic effect, such as: aseptic ice treatment to help ease the redness and swelling; the use of medical repair masks and repair solution to help achieve better whitening and moisturizing effect; strengthen the sunscreen to avoid hyperpigmentation and so on. 3. Life conditioning: after the treatment of water light needle, you also need to pay attention to light diet, avoid spicy and stimulating food, quit drinking; scientific work and rest, etc., which will help the metabolic function of the facial skin to maintain in a good state, to help the recovery. It is recommended that patients go to regular hospitals and beauty institutions for hydrafacial injection treatment, and strictly comply with the instructions for scientific care after treatment to avoid the occurrence of adverse reactions.