The head-low-foot-high position is suitable for the following diseases: 1. When there are secretions in the lungs and drainage is required, including lung abscess. Patients with lung abscess have more sputum and it is not easy to cough it up, using this position can help the sputum to be drained gradually along the direction of bronchial travel. Postural drainage is another effective treatment for lung abscess in addition to antibiotic therapy. In addition, patients with hemoptysis also need to use the head-low-foot-high position, which can help the blood coughed out to be discharged smoothly in order to prevent asphyxia.2. Duodenal drainage, the use of this position is conducive to bile drainage.3. Premature rupture of fetal membranes during pregnancy can prevent the umbilical cord from falling off.4. Heel and tibial tuberosity traction can be performed in the head-low-foot-high position, using the body’s gravity as a counter-traction force.