Low molecular weight heparin sodium gel may be used in small amounts by breastfeeding women after evaluation by a physician. Low molecular weight heparin sodium gel is a topical medication that is usually used during the recovery period of closed superficial soft tissue contusions to increase local vascular permeability and improve local blood circulation, thereby producing a reduction in swelling and elimination of blood stasis. This product is contraindicated in patients who are allergic to the product or have significant coagulation disorders. The United States Drug and Food Administration FDA pregnancy safety classification of this drug is B, is relatively safe to use, such as a small amount of local use during breastfeeding, basically does not affect breastfeeding, but the use of drugs need to strictly comply with the doctor’s instructions, can not be arbitrarily used on their own, the use of the drug has an adverse reaction to the need for timely discontinuation of the medication to seek medical attention.