The precautions for indwelling needle mainly include paying attention to whether there are uncomfortable symptoms, as well as avoiding force on the puncture site, avoiding infection and so on. The needle is an invasive operation commonly used in the clinic, mainly used for intravenous infusion, after puncture should pay attention to whether the local discomfort symptoms, infusion puncture local redness, swelling, pain and other manifestations, if there is discomfort promptly inform the nurse for treatment. Attention should be paid to the puncture limb should not be too much force, should avoid lifting heavy objects and strenuous exercise, so as to avoid the needle damage to the local skin; at the same time should avoid water, pay attention to keep the puncture site dressings dry, clean, and do a good job of disinfection at regular intervals in order to prevent infections from occurring, and after the infusion is completed, please ask the nurse to seal the tube processing. It is recommended that patients use indwelling needles under the guidance of healthcare personnel to avoid infection and damage to blood vessels.