First, the snow and ice world heavy safety winter, to the north to play snow paddling ice, to the mountains to go skiing, can also play with fervor. However, when you are having fun, you must keep the safety off. First of all, you should choose the right “play” equipment, such as ice skates, skis and ski poles, to prevent loosening off wounds or lacerations skin and joints. Secondly, do not pack hard objects on your body, such as keys, knives, etc., so as not to bruise yourself when you fall. The most important thing is not to roll over on your own, which can damage the cervical and lumbar spine and can have serious consequences. What to do in case of a fall? Do not rush to struggle and stand up unsteadily, resulting in unilateral hand, elbow or hip landing, which is most likely to occur when the injury fracture dislocation. If the body as a whole to fall forward or backward, it is best to let the limbs slide along, so that the fall is less likely to be injured. Finally, remember to play and forget to keep warm, long skiing and skating when the most vulnerable parts of frostbite is the fingers, feet, ears, nose tip and other parts, should choose to use a better insulation effect of cashmere products or down products to the above parts of the insulation. Second, indoor activities to prevent slippery anti-fall anti-knock winter outdoor activities are reduced, especially holidays, eat and drink indoor activities increased, such as singing and dancing, indoor ball games. This time try to avoid chasing, jostling, to prevent injuries. Plus drinks spilled on the floor, the floor is relatively smooth, the most likely to slip and fall injuries. Especially the elderly should pay more attention to avoid falls to prevent fractures of the spinal joints. So timely cleaning of the ground water damage is most important. Third, pay attention to the protection of warm-up supplemental fluids to prevent cramps dry winter, because of the cold muscle joint stiffness, so before exercise must first do a short warm-up, such as jogging, joint flexion and extension activities, etc., to prevent sprained joints. It is best to bring protective gear for protection when performing ball games. Remind everyone to drink water in time, mainly with light sugar and light salt, to replenish energy and prevent muscle fatigue and calf cramps.