Processing method of non-periodic channel state information and device and system

The invention discloses a processing method of non-periodic channel state information and a device and a system. The problem that the interval of non-periodic CSI (Channel State Information) from trigger to feedback is too short to allow the information to be effectively processed can be solved. The method comprises the following steps of: receiving high-level configuration information, wherein the high-level configuration signaling comprises one or more CSI-RS configuration signaling, and receiving one or more CSI-RS reference signals; according to the one or more CSI-RS configuration signaling, carrying out channel measurement of one or more CSI-RS reference signals, and obtaining measurement results; and determining K non-periodic CSI by using the results, and reporting the K non-periodic CSI on K different subframes, wherein K is an integer more than or equal to 2. The embodiment of the invention overcomes the problems that in COMP (Coordinated Multiple Points) technology or a distributed antenna system, the feedback time from trigger non-periodic CSI to actual CSI is too short to allow the information to be effectively processed.