Effective ways to increase blood volume include blood transfusion, vasodilatation, infusion of rehydration solution (sugar water, saline, sodium lactate Ringer injection, etc.), plasma solubilizer and other methods. 1. Blood transfusion: it can replenish 1/3 to 2/3 of the blood loss and quickly replenish blood volume. 2. Vasodilatation: drugs such as captopril can dilate blood vessels and improve peripheral blood circulation. 3. Infusion of rehydration solution: saline, sugar water and sodium lactate Ringer injection can be supplemented. 4. Plasma solubilizer: 706 substitute plasma and dextrose can be used to improve microcirculation. The above are some of the methods to replenish blood volume, such as clinically diagnosed need to replenish blood volume, should not be treated without authorization, in order to achieve a relatively good prognosis, it is recommended to go to the hospital in a timely manner for consultation and treatment.