The invention discloses a two-dimensional DOA tracking method by means of multi-frame information, and belongs to the field of radar signal processing. A movement model of a target is considered for a weak target under the environment of low signal-to-noise ratio and few snapshot data, the estimation result of the target state is not declared in single frame, and combined processing is performed on multi-frame data by adopting a dynamic programming algorithm according to the state transition relationship of the target so that multi-frame space-time information of the target can be fully utilized and real-time tracking of the two-dimensional DOA of the target can be realized. The beneficial effects of the two-dimensional DOA tracking method by means of the multi-frame information are that real-time tracking of the two-dimensional DOA of the weak target can be performed under the environment of low signal-to-noise ratio and few snapshot data. Compared with an existing two-dimensional DOA method, higher tracking convergence probability and better DOA estimation precision can be obtained by the method.