The general principles of heat stroke infusion are salt first, then sugar, fast then slow, crystal first then colloid. Clinical rehydration is based on the actual electrolyte test results. Heat stroke is a disease caused by the imbalance between heat production and heat dissipation in the body because people are in a high temperature and high humidity environment for a long time, and the heat in the body cannot be dissipated in time. As the patient loses more electrolytes, the crystalloids should be replenished first, followed by the colloid fluids. The patient loses a lot of water, and the condition may lead to shock if it is heavy, so the fluids should be replenished quickly at the beginning, and multiple channels can be replenished together, and when the blood volume is almost replenished, the speed of replenishment can be slowed down.