A wireless charger is provided. The wireless charger includes a housing, a baffle, a coil module, a circuit board, and a fan. The housing defines a mounting cavity, a first vent, and a second vent. The baffle is disposed in the mounting cavity and divides the mounting cavity into a first chamber and a second chamber. The coil module is disposed in the second chamber. The circuit board is disposed in the mounting cavity and electrically connected to the coil module. The fan, disposed in the first chamber and configured to guide air to flow into the first chamber from one of the first vent and the second vent and guide the air to flow out of the first chamber from the other of the first vent and the second vent, such that the air at the second vent exchanges heat with the electronic device.