The utility model provides an inhead type bed board wire saw cutting machine which comprises a support, a cutting device and a pressing plate. The upper end of the support is provided with a beam, the beam is provided with a motor and a guide rail, the guide rail is provided with a slide sleeve, the slide sleeve is connected with the motor through a chain, the lower face of the slide sleeve is connected with the cutting device through a transmission rod, the cutting device is provided with a saw blade, a saw support connected to the support is arranged under the saw blade, an upper dust absorption apparatus is arranged on the pressing plate, a lower dust absorption apparatus is arranged on the saw support, the upper dust absorption apparatus and the lower dust absorption apparatus are arranged on the upper side and the lower side of the cutting device respectively, and a cylinder is arranged on the saw support. A piston rod of the cylinder is connected with the pressing plate. The inhead type bed board wire saw cutting machine solves the technical problems that in the prior art, cutting is not tidy, installing and maintaining are difficult, and generated saw powder and dust are difficult to process, and is more accurate in saw cutting, the generated dust and saw powder can be recycled through the dust absorption apparatus, the service life of a cutting saw is prolonged, and meanwhile damage to health of workers is reduced.