There is no such thing as the best way to replenish the brain, and medications should be used under a doctor’s supervision. The better ways to replenish the brain include: improving diet, strengthening exercise, and using drugs to promote brain metabolism or improve brain cognitive function. 1. Improve diet: In terms of diet, try to eat light, nutrient-rich food, especially to eat more protein, vitamins, trace elements rich in food, avoid eating high cholesterol, high-fat food. A healthy diet can play an auxiliary role in replenishing the brain. 2. Strengthen sports and intellectual training: appropriate strengthening of physical exercise, intellectual games, intellectual training, can improve the body’s immunity, improve cognitive function, may improve the blood supply to the brain, assisting in replenishing the brain. 3. If the decline of brain function is caused by diseases, such as Alzheimer’s disease, drugs can be used to promote brain metabolism or improve brain cognitive function: commonly used drugs mainly include piracetam tablets, donepezil hydrochloride tablets, nimodipine tablets and so on. The use of drugs should be under the guidance of a doctor.