Portable field investigation device

The invention discloses a portable field investigation device which is characterized in that a front cover is located on one side of a shell, a rear cover is arranged on the other side of the shell, ahandle is installed on the top of the shell, a fixing support is connected with one side of the handle, the other side of the handle is connected with the top of a lifting mechanism, and the bottom of the lifting mechanism is connected with the rear cover; a diffuse reflection light source comprises an upper lamp tube, and a light homogenizing plate, a lens and an array LED light source a are sequentially installed in the upper lamp tube from front to back. The multiband dodging light source comprises a metal fixing cylinder, and an optical filter, a lens c, a lens b, a lens a and a single LED lamp are sequentially clamped in the metal fixing cylinder from front to back. A grazing light source comprises a lower lamp tube, and a cylindrical mirror, an aspheric lens and an array LED light source b are sequentially