The invention, which belongs to the satellite navigation receiver signal processing field, particularly relates to a precise trapping method for carrier and pseudo code two-dimensional searching. The method comprises: I-path and Q-path down-conversion data obtained by quadrature down conversion and local pseudo codes are sent into a short-time coherent integration module; the short-time coherent integration module delays the pseudo codes to obtain pseudo codes with different phases; correlation operation is carried out on the pseudo codes and the I-path and Q-path down-conversion data to obtain a short-time coherent integration result; the short-time coherent integration result is sent into an RAM for caching; after caching, the processed result is sent to an FFT module for operation; model solving is carried out on an FFT output result; a model solving result is sent into the RAM to realize non-coherent accumulation; and then peak detection is carried out on a non-coherent accumulation result to obtain a maximum non-coherent accumulation peak as well as a corresponding carrier frequency and a corresponding pseudo code phase. The precise trapping method has advantages of fast trapping speed, reduced occupied resources, and high trapping sensitivity.