The invention discloses a space multi-spectral information acquiring device which comprises a central controller, a first acquisition circuit and a second acquisition circuit, wherein the first acquisition circuit and the second acquisition circuit are connected with the central controller; the first acquisition circuit comprises a first sensor drive module and a visible light sensor, the first sensor drive module is connected with the central controller and the visible light sensor is connected with the first sensor drive module, the visible light sensor is used for acquiring space spectrum information at red, green and blue wavebands; the second acquisition circuit comprises a second sensor drive module and a near infrared sensor, the second sensor drive module is connected with the central controller, the near infrared sensor is connected with the second sensor drive module, the near infrared sensor is used for acquiring space spectrum information of a near infrared waveband; and the central controller is used for controlling the first sensor drive module and the second sensor drive module to drive the visible light sensor and the near infrared sensor to simultaneously acquire the space spectrum information. The space multi-spectral information acquiring device in the embodiment of the invention has the advantages of convenience for realization, low cost and capability of being used for effectively acquiring growth information of crops in fields.