The invention discloses a low-speed sequence frequency mixing method for a compressed sensing receiver, and the method is applied to a broadband frequency mixing circuit structure of the compressed sensing receiver and belongs to the technical field of RF communication. Low-speed random sequences independent from each other are used to implement multiple times of frequency mixing with an RF signal, the frequency spectrum of each low-speed sequence is relatively narrow, a high-frequency part of the RF signal is moved towards low and intermediate frequency continuously, and a compressed sensing algorithm is sued to reconstruct and recover an original signal. The method can be used to reduce hardware cost greatly.