If there is white mucous discharge from the lips, it is due to the following reasons: 1. The most common causes are bacterial infection and fungal infection, usually the lips are particularly susceptible to bacterial infection leading to local cellulitis, or there is inflammation and swelling of the surrounding soft tissues, when white mucous exudates and secretions are formed. 2. When the lips are infected with fungi, such as infection with Candida albicans, white mucous discharge is particularly likely to appear around the lips and tongue. When the lips are infected with fungus, such as Candida albicans, white mucous secretions are especially likely to appear on the lips and tongue tip. 3, periodontitis or pulpitis apicalis, white mucous secretions will also appear around the lips. 4, in the digestive system, such as digestive dysfunction resulting in spleen and stomach dysfunction, if there is a gastrointestinal tract plant nerve dysfunction, there will also be white mucous secretions around the lips. 5, in When suffering from diabetes, there will be some symptoms such as white tongue coating, less fluid, white lips and increased mucous secretions.