The efficacy of Tongmai Granules is to benefit qi and nourish blood, and pass the channels to lower the milk, which can be used for the postnatal period due to insufficient qi and blood with little milk, no milk or even no milk. Therefore, Tongmai Pellet can be used to treat postpartum lack of milk. Tongmai Granule belongs to a kind of Chinese patent medicine, which is mainly composed of Astragalus, Radix Rehmanniae Praeparata, Radix et Rhizoma Gastrodiae Praeparata, Radix Quemeliae Praeparata, Rhizoma Asparagus, and Rhizoma Lutetiae Praeparata, and can be used for postnatal cases of low milk. When using this medicine, you should be careful not to eat spicy and stimulating food, and do not eat too salty as well as too acidic food, and it is not recommended to use it for those who have too much evil discharge, and the adverse reactions and contraindications are not yet clear. When the mother appeared after the birth of the lack of milk, it is recommended to consult a doctor in time, under the guidance of the doctor to use the drug treatment, avoid unauthorized use of medication, to prevent the cause of adverse consequences.