Men’s leg weakness, weakness, usually seen in the following possibilities: the first case, it may be because of prolonged walking, or after strenuous exercise, the lower limb muscle lactic acid accumulation, inflammation of the fascia, muscle strain, and then appear leg weakness, weakness, walking difficulties. You can take sufficient rest, avoid strenuous exercise, and use local hot compress treatment or massage to relax the muscles, and the symptoms can be significantly improved. The second condition may be electrolyte disorders, because of prolonged vomiting or diarrhea, resulting in electrolyte disorders in the body, such as low potassium, low sodium and a series of conditions, there may be weakness, heaviness, walking difficulties in both lower limbs. In the third case, there may be cervical spine lesions or cranial lesions. Because the central nerve is stimulated, or damaged, and then muscle numbness, weakness, and difficulty walking in the innervated area occur. You should actively improve the MRI examination to clarify the diagnosis and then treat it as soon as possible.