After infection with novel coronavirus, patients need to receive isolation treatment. The diet should be light, avoiding spicy, oily and other stimulating foods, prohibiting smoking and alcohol, but consuming sufficient calories. Meanwhile, during the ongoing epidemic, uninfected people should strengthen their own nutrition, consume more high-protein foods, not eat wild animals, eat more fresh vegetables and fruits, and drink more water. Ensure adequate nutrition and sleep, and also take appropriate supplements of compound vitamins, minerals and deep-sea fish oil to facilitate disease prevention.