Insomniacs can drink warm milk before bedtime, which can promote sleep to some extent. The tryptophan contained in milk can help regulate brain nerves and soothe emotions, and can also play a calming and tranquilizing role to a certain extent, so drinking warm milk 1-2 hours before bedtime can help deepen sleep. In addition, it should be noted that the time to drink milk should not be too late, if you drink milk within half an hour before bedtime, may increase the number of urination at night, but affect the normal sleep; before bedtime should not drink cold milk, otherwise it will cause adverse stimulation of the gastric mucosa, may also cause abdominal pain or diarrhea and other discomfort, deepening the degree of insomnia. Insomnia is a very common phenomenon, usually related to the environment, emotions, habits and illnesses and other factors, relying solely on milk is difficult to solve the problem of insomnia from the essence, the need to clarify the causes of insomnia for targeted treatment. 1, environmental factors: if the sleep environment is too noisy, filled with high decibel noise or light intensity is too high, it will affect the normal sleep, it is recommended to improve the sleep environment to alleviate insomnia; 2, emotional factors: some people may become emotional before going to bed because of watching football games, playing games or chatting with friends, it is often difficult to fall asleep quickly, it is recommended to calm emotions by soaking feet, listening to light music or deep breathing, etc. 3, habits: some people drink too much water before bedtime, drinking strong tea, wine and coffee and other stimulating drinks will excite the brain, resulting in insomnia. It is recommended to improve bad habits and minimize exposure to stimulating drinks or food before bedtime; 4. Disease factors: Under the influence of disease factors such as depression, anxiety, gastroenteritis, hypertension, etc., patients may have difficulty falling asleep or have low sleep quality. Patients are advised to take different treatments to promote sleep for different causative factors, and if they cannot improve, they should adjust the treatment plan in time.