Toe cramps are usually caused by calcium deficiency, impaired blood circulation, excessive exercise, cold stimulation and other factors. 1. Calcium deficiency: A lack of calcium can lead to increased neuromuscular excitability, which triggers toe cramps and, in severe cases, can lead to epileptic seizures. 2. Obstructed blood circulation: arteriosclerosis or varicose veins in the lower limbs can lead to localized obstruction of blood circulation, which in turn triggers toe cramps. 3. Excessive exercise: Excessive exercise and fatigue on weekdays can also cause toe cramps, and may be accompanied by gastrocnemius muscle cramps. 4. Cold stimulation: when the weather is cold, the feet are exposed to lower temperatures in the environment, also due to cold stimulation, and toe cramps. In addition, there are many other factors that can cause toe cramps, if accompanied by other discomforts, it is recommended to go to the hospital in time.