How long does it take to remove a foot cast generally depends on the circumstances of the specific foot injury. In the first case, it is possible that the foot muscles, tendons, ligaments and other soft tissues are strained, and there is no tear of soft tissues, generally the cast is fixed for 1-2 weeks, and when the edema period has passed and the soft tissues gradually reach initial healing, the cast can be removed for functional exercise. In the second case, if the soft tissues are torn, surgical suturing of the broken end is required, which is usually fixed for about 4 weeks, and if the cast is removed too early, it may lead to re-injury and fracture of the suture position. In the third case, there may be a fracture in the bone of the foot, which generally needs to be fixed for about 4-6 weeks, as this time is required to achieve initial clinical healing. It is best to have a plain film examination to see if the fracture has reached initial clinical healing, and only after that can the cast be removed.