A watch magnetic charger comprises housing (101, 102), a charging connector, a connection line (104), and a magnetic piece and a circuit board located in the housing (101, 102). The connection line (104) is connected to the circuit board and configured to extend outside the housing (101, 102). An outer side of the housing (101, 102) is configured to form an attraction surface attaching and fitting to a watch. The charging connector is exposed outside the attraction surface of the housing (101, 102), electrically connected to the circuit board, connected to a computer or another power supply apparatus via the connection line, and configured to attract the watch using the magnetic piece to closely fit the watch to the housing (101, 102) and enable a charging interface of the watch to be in contact with the charging connector, resulting in a charging effect. As such, the embodiment of the invention provides a simpler charging operation of a watch, reduces an unfavorable charging effect owing to employing a frayed charging cable in a charging process, prevents the watch from a charging malfunction and an affected service life as a result of dust buildup during long-term use, enhancing an charging effect of a watch, being simple in structure, and providing wide applications.