The present invention discloses a realization method of a low-time delay and low-consumption digital baseband signal. The method comprises the following steps of carrying out the filtering forming on a binary signal via a Gaussian filter to generate a smooth signal not having a high-frequency component; accumulating phases continuously via an integral module to realize the mapping from amplitudes to phases, and generating the corresponding phase values; utilizing a CORDIC algorithm to realize the conversion from phases to amplitudes, and finally realizing a GFSK baseband signal. The realization method of the low-time delay and low-consumption digital baseband signal of the present invention successfully solves the restrictive relation among speed, area and precision aiming at the generation limitation of a conventional Bluetooth digital baseband signal, breaks through the limitation of an angle coverage range, and enables an angle convergence range to be improved.