Sputum is the mucus produced by the lungs and lower respiratory tract. There are several ways to effectively remove mucus: First, keep the air moist because dry air can irritate the nose and throat, leading to more mucus formation. It is recommended that atomized humidifiers can be placed in the bedroom to humidify the air in the room, which can also promote sleep. Secondly, drinking more water can keep the body well hydrated to keep the mucus thin and facilitate its discharge. Third, saline nasal spray can be used to rinse the nasal cavity. Saline spray and rinse can remove mucus and allergens from the nose and sinuses, but be careful to use sterile water and distilled water for rinsing. Fourth, you can gargle with salt water. Salt water gargling can relieve a dry throat and help remove residual mucus. Fifth, allergies should be controlled during the allergy season. Seasonal allergies can cause runny and stuffy nose, as well as excess mucus and phlegm.