In general, a runny and crusty nose can be cured in 3-5 days if the healing process is relatively good. However, it is necessary to analyze some cases, for example, people with good basic immunity or without previous diabetes or capillary diseases, blood system diseases, such as thrombocytopenia, for such people, the nose can be completely cured within 3-5 days. If the infection is relatively serious or if there is exudate coming out of the nose even though it has pus and crust, it will take a longer time to recover in this case, 5-7 days to recover. In the case of pre-existing diabetes or capillary rupture, the time required for the nose to completely heal from pus and crust is relatively long, more than 7 days.