Neck-hung fan

The utility model provides a neck-hanging fan. The neck-hanging fan comprises a shell; the fan assembly is accommodated in the shell; the circuit board is contained in the shell, and the circuit board is electrically connected with the fan assembly; the stepless speed regulation module is electrically connected with the circuit board and used for regulating the wind speed of the fan assembly according to at least one of the fan assembly noise, the external environment noise, the external environment temperature, the external environment airflow, the user body temperature and the user skin humidity. The stepless speed regulation module is arranged on the neck-hanging fan, so that a user can steplessly regulate the wind speed of the fan assembly according to at least one of the fan assembly noise, the external environment noise, the external environment temperature, the external environment airflow, the user body temperature and the user skin humidity, the wind speed regulation range is large, and higher autono