Commonly used first aid methods are: when encountering heatstroke can quickly move the patient to a cool and ventilated place, undress and wipe the body with a cold towel to quickly cool down, and can take light saline, cool drinks, etc. orally. If you encounter sunburn skin redness, swelling, pain, pain, available cold towels on the affected area, and appropriate skin cream. If the skin has blisters, do not pick them to prevent infection. If you are stung by a bee, pull out the residual poisonous stinger, gently squeeze out the venom, and then apply some ammonia, soda, etc. Immediately after encountering a burn you should rinse with cold water or apply a cold compress to the burned area, to last for more than 15 minutes. Do not apply medicine to the scalded area without permission, let alone soy sauce, vegetable oil, etc. After the fracture must be fixed on the affected limb before sending to the hospital, otherwise, the broken end of the fracture will move abnormally and aggravate the injury. If you encounter a spontaneous pneumothorax you should put the patient in a resting position, do not move, put the patient in a semi-recumbent position, and if you have oxygen at home, you can immediately administer oxygen and call 120 emergency at the same time. For patients with seizures, the patient should be quickly laid flat with the head tilted to the side to prevent asphyxiation by backward vomiting. At the same time, put something soft around the patient to prevent bruising. Before the patient’s teeth close, roll a towel into a roll and stuff it in the mouth to prevent the patient from biting his or her tongue. In addition, if bitten by a dog or cat, the wound should usually be flushed. A prolonged rinse with soapy water may be used, followed by exposure of the wound and timely rabies vaccination.