Nose always have snot like phlegm, that is more viscous, the common cause of chronic rhinitis, purulent sinusitis and so on. 1. Chronic rhinitis: a chronic inflammation of the mucous membrane and submucous layer of the nasal cavity caused by various reasons, mainly manifested as nasal congestion, runny nose and other symptoms, which can last for more than a few months or recurrent episodes of the state, the nasal mucus is mostly mucus or mucopurulent, like phlegm. 2. Purulent sinusitis: refers to the occurrence of purulent inflammation of the sinuses, mostly chronic, often manifested as an increase in nasal purulent secretions like phlegm, accompanied by nasal congestion, loss or loss of sense of smell, tinnitus and so on. There may be other reasons why the nose is always snotty and phlegm-like, it is recommended to go to the hospital in time to find out the cause and standardize the treatment.