After donating blood, patients must pay attention to take better care of their body. First of all, you should drink a glass of milk or sugar water after blood donation to avoid dizziness. Secondly, it is important to take care of the wound for a period of time after blood donation to avoid infection. Generally speaking, you should not take a shower for one day after blood donation, otherwise it will easily induce wound infection and have serious consequences. After blood donation, patients must pay attention to eating foods with high nutritional value to help promote the production of blood cells.