Patients with sore feet and weakness are commonly caused by the following: First, over fatigue: prolonged standing or prolonged walking can lead to excessive weight-bearing of the foot muscles, fatigue, and extensive accumulation of acidic metabolites in the muscles, which can cause soreness and pain in the muscles, accompanied by muscle weakness. Through massage and hot compress treatment, the symptoms will soon be completely relieved. Second, lower limb vascular lesions: varicose veins, venous reflux disorders can lead to obstruction of blood circulation in the lower limbs, so that the level of muscle metabolism decreases, which will also produce clinical symptoms such as soreness and weakness of the feet, and at the same time, there will be obvious fatigue and soreness of the lower limbs. Through lower limb vascular ultrasound examination, a clear diagnosis can be made, and timely treatment of the primary disease can lead to significant relief of symptoms.