Weakness of legs after eating may be caused by cerebrovascular disease, cardiovascular disease and other factors. 1. Cerebrovascular disease: many patients with cerebrovascular disease show generalized weakness after meals, mainly due to insufficient blood supply to the vertebral basilar artery. 2. Cardiovascular diseases: After most patients have finished eating, the body’s blood will enter the gastrointestinal tract to help food digestion and absorption. At this time, the body back to the heart blood volume is seriously insufficient, affecting the coronary artery blood supply, there may be obvious blood supply deficiency phenomenon. Especially for patients with coronary heart disease, the symptoms of weakness around the body after eating will be very obvious. It is recommended that patients treat the primary disease as soon as possible to improve the symptoms of weakness of legs after eating. Patients should pay attention to not overwork in daily life, and should go to the hospital as soon as possible when they find cerebrovascular and cardiovascular factors.