Measurement while drilling device

The invention relates to the technical field of measurement while drilling, in particular to a measurement while drilling device which comprises a drill collar body, a transmitting short section, a battery short section, an internal pressure sensor, an external pressure sensor, a power-on port plug, a communication plug cover plate, a communication plug, a long cover plate, an inner annulus cover plate, an outer annulus cover plate and a communication port cover plate. At least two mounting long grooves are formed in the outer side of the middle of the drill collar body at intervals along the circumference, a transmitting short section is arranged in at least one mounting long groove, a battery short section is arranged in at least one mounting long groove, and a long cover plate is fixedly mounted on the outer side of the drill collar body corresponding to the position of each mounting long groove. The drill collar is reasonable and compact in structure and convenient to use, and the accuracy of engineering