Men can prevent hair loss through balanced nutrition, pay attention to scalp hygiene, regular work and rest, etc. Once pathological hair loss occurs, it is necessary to consult a doctor in time. 1. Balanced nutrition: It is recommended that men pay attention to balanced nutrition, avoid picky eating, partiality and other bad eating habits, eat more food rich in protein, vitamins and other substances in order to ensure that the body to avoid malnutrition, which leads to hair loss. 2. Pay attention to scalp hygiene: it is recommended to keep the scalp clean, clean, avoid the use of too hot water to wash hair, avoid scratching the scalp, avoid the use of irritating shampoo products, shampooing products need to be thoroughly washed after shampooing, to avoid residual, to avoid frequent perming and dyeing of the hair. 3. Regular work and rest: it is recommended to ensure enough sleep, avoid staying up late, avoid excessive fatigue, maintain a good state of mind, can also prevent hair loss. It should be noted that healthy people have the phenomenon of physiological hair loss, falling about 50~100 hairs per day, which is a normal phenomenon and does not require special treatment; dysplasia, hypothyroidism, abnormal hair shaft structure, seborrheic dermatitis and other disease factors may lead to pathologic alopecia, and at this time, it is recommended that the patient seek medical attention in a timely manner in order to determine the cause of the disease and symptomatic treatment.