If the patient always has a cold accompanied by runny nose, it is usually due to the following factors: 1. When the immune system is too low and a cold occurs, nasal congestion, sneezing, runny nose, runny nose occurs. 2. Always have a cold and runny nose, identify the color of the nasal water to see if it is cyan or belongs to the viscous yellow. If it’s greenish-colored, it’s usually because of a viral cold. If it is a yellow nasal discharge, and accompanied by purulent and sticky secretions, usually the cause of bacterial colds. In this case, it is necessary to identify and take certain medications to treat the cold and runny nose. For example, bacterial colds can use cephalosporin, ofloxacin, penicillin and other drugs orally, if it is a viral cold clear nasal water, you can take such as oseltamivir, etc. 3, cold often runny nose, but also to rule out whether the primary has an allergic rhinitis, allergic rhinitis, colds will be the case of runny nose.