Tibia fracture 40 days, sitting with the leg preferably placed horizontally, can avoid the affected limb prolonged low hanging caused by edema. At 40 days, the fracture is in the second stage of healing (primary scab formation). At this time, the fracture is forming a bone scab and is being strengthened by calcification. At this time, it is best to sit on the bed and place the leg horizontally. If the leg is placed vertically, it will lead to edema at the fracture site of the affected limb, which will result in swelling and pain and affect the healing of the fracture. And it is also important to note that it is best not to hold a position for a long time, to avoid complications such as acne. Rehabilitation exercises should also be carried out under the guidance of the doctor during bed rest, and the necessary rehabilitation exercises can prevent complications such as venous thrombosis of the lower limbs and joint stiffness.