There are several reasons for leg numbness during the postpartum period: 1, lying in bed for too long, or prolonged sitting causes poor blood circulation in the lower extremities, resulting in leg numbness, which can be relieved after activity. 2, you should be alert to whether there is venous thrombosis in the lower extremities, blocking the veins of the lower extremities and causing numbness due to obstructed blood flow. Because the body has a protective function for itself after childbirth, the coagulation function is enhanced, which can effectively prevent hemorrhage during and after childbirth, but because the coagulation function is enhanced, it is also easy to form blood clots, and if there is less activity after childbirth, it is more likely to form venous thrombosis in the lower limbs. If there is numbness and swelling in both lower extremities, and it is not relieved after activity, you should go to hospital for Doppler ultrasound of both lower extremities in time to rule out the formation of venous thrombosis.