The invention discloses an automobile rain sense window closing device. The device comprises a rain sense detection mechanism, a control host is connected with the rain sense detection mechanism through a signal line, the control host is connected with a door window mechanism through a signal line, a skylight mechanism is connected with the control host through a signal line, a rain sense detection mechanism main body is a rain sensor and is installed on the inner side of a front window of a vehicle, a control host main body is a single chip microcomputer, the control host is provided with anoperation panel, the operation panel is provided with a control switch, and the automobile rain sense window closing device is provided with two working modes of manual mode and automatic mode. Compared with the prior art, the automobile rain sense window closing device has the advantages that when a rain sense sensing probe senses rainwater during raining, all door windows and a skylight can be automatically closed, the situation that the rainwater enters a circuit to cause damage due to the fact that the windows are forgotten to be closed during raining is avoided, the structure is simple and exquisite, easy-to-damage pieces are avoided, the service life is long, and use is convenient and fast.