DS At-Bit Combo is consisted of MWD, At-bit measuring instruments, and inductive resistivity. The at-bit measuring instrument provides both the oblique and gamma measurement. The well deviation sensor and the gamma sensor are mounted on the bending shell power drill according to a certain arrangement, only 0.6m away from the bit. It connected the induction resistivity and the measuring instrument to the MWD instrument using the short pass technology to transmit the measured data to the induction resistivity, and transmitted to the ground via MWD to obtain the optimal well deviation parameter, gamma and resistivity information which can control the drilling at the best location of reservoir.