If it takes a long time to return milk, it may not be possible to chase milk, and if it is caused by endocrine and other pathological reasons, it may not be possible to return milk. It is suggested that women should pay more attention to eating soup and water during lactation, and pay attention to nutrition supplement, and keep their breasts clean and hygienic to avoid mastitis and other diseases. And we should also pay attention to avoid the intake of substances with milk-returning effect, including raw malt and vitamin B6.