The utility model discloses an information acquisition device for soil property measurement, which is characterized in that a halogen lamp fixing rod of the device is vertically fixed at one end of abase, and an optical fiber probe fixing rod is vertically fixed at the other end of the base; the halogen lamp is movably connected with the halogen lamp fixing rod; the optical fiber probe is fixedlyarranged on the optical fiber probe fixing rod, the detection end of the optical fiber probe is perpendicular to the plane of the base, the soil sample container is arranged on the base and located between the optical fiber probe fixing rod and the halogen lamp fixing rod, and when soil is measured, the detection end of the optical fiber probe is perpendicular to the center of the soil sample container. A soil sample is put into the soil sample container and is arranged right below the optical fiber probe, and then the irradiation angle of the halogen lamp is adjusted, so that the soil spectral reflectance data can be acquired. Compared with traditional soil data collection, the irradiation intensity and angle of the halogen lamp and the detection position of the optical fiber probe can be accurately controlled, and therefore the accuracy of spectral measurement can be indirectly improved.