The correct rehydration principles of shock, if the patient in shock sent to the hospital after the principles taken include: 1, first fast and then slow: is to be in half an hour or even an hour, input 50% of the entire amount of fluid loss. 2, first crystal and then colloid: crystalloid refers to the usual infusion of fluids, such as saline, such as balanced liquid lactate Ringer’s solution, acetate Ringer’s solution, these are crystalloid. Sugars such as glucose do not belong to crystalloids. Colloids refer to artificial colloids or natural colloids, artificial colloids like 706 plasma substitute, hydroxyethyl starch, and polygelatin peptide, these are artificial colloids, and natural colloids, which are plasma, and albumin, which are natural colloids. In the process of replenishment, there is a certain ratio of crystals and colloids, and this ratio is also determined according to the content lost and what the lost fluid actually is; 3. Seeing urine and replenishing potassium: what is lacking is replenished, how much is needed, and also taking into account the heart and lungs and other important organs.