The most common causes of sudden foot pain are as follows: 1, gout: gout can be the first attack in the foot, especially in the toes, the root of the big toe and the tarsal joints of the foot with obvious pain, severe cases can be accompanied by skin redness and swelling, as well as elevated skin temperature, this time, we should pay attention to the blood test of uric acid for diagnosis and treatment. 2, other: such as in the daytime after an excessive amount of physical activity, or a long walk, the foot tendon is acutely injured or muscle strain can also lead to sudden pain, at the same time, we should pay attention to rest, and local physical therapy and oral medication, or topical medication. If the tendons of the foot have been acutely injured or the muscles have been strained, it can also lead to sudden pain, then we should pay attention to rest, and at the same time, we should carry out local physical therapy and oral medication, or topical medication, all of which can play a good role in relieving pain.