It takes 5-7 days to remove the drainage tube after adolescent scoliosis surgery. Because adolescent scoliosis surgery is highly invasive, in order to prevent blood accumulation after surgery, doctors will place drainage tubes at the surgical site to drain excess blood and promote wound recovery. In 5-7 days after surgery, the drainage volume of the drainage tube will gradually decrease. The doctor will judge whether the drainage tube can be removed based on the drainage situation and the patient's recovery. Therefore, adolescents need to wait 5-7 days after scoliosis surgery before removing the drainage tube.