The invention provides a switch capacitor mixing circuit and a communication transceiving device with the same. The switch capacitor mixing circuit comprises a switch mixing circuit and a sampling retaining circuit connected with the switch mixing circuit, wherein the switch mixing circuit is used for realizing signal mixing and outputting analog signals with multiple switch states; and the sampling retaining circuit is used for sampling the analog signals outputted by the switch mixing switch at regular time, and retaining sampling values within a sampling pulse to form timing sequence waveforms corresponding to multiple switch states respectively by fitting. Compared with the prior art, the switch capacitor mixing circuit has the advantages of simple structure, less required sequential control and the like.