If you want to let the fluid buildup in your ankle heal on its own, you need to determine whether it will heal on its own, depending on the specific cause of the fluid buildup in your ankle. If it is an injury or fracture of the ankle joint that causes the localized effusion, the symptoms of ankle effusion can be slowly healed by resting the ankle joint and doing proper functional exercises. Timely and effective treatment should be carried out in the early stage, or the fracture should be immobilized in time, in order to make the symptoms of ankle injury resulting in effusion slowly healed. If there is chronic inflammation in the ankle joint, resulting in fluid buildup in the ankle joint, it is very unlikely that the fluid and inflammation will be absorbed gradually and heal on its own. The joint inflammation should be treated in a timely manner, whether by medication or physical therapy. If not treated in a timely manner, the inflammation of the joint and the fluid in the ankle may gradually worsen, leading to more serious consequences.