The invention discloses an SFC dynamic deployment method with flow consciousness and energy perception, which comprises the following steps: S1, detecting the current physical network state; S2: traversing the VNF of the SFC; 3, selecting a set of that powered-on deployment; S4, executing BL-BFS algorithm, obtaining the shortest path union; 5, selecting an unpowered deployment set; S6, executing BL-BFS algorithm to get the shortest path; 7, selecting a set of that powered-on deployments; S8, executing BL-BFS algorithm to get the shortest path; 9, selecting an unpowered deployment set; S10, executing BL-BFS algorithm to get the shortest path; S11, outputting the deployment scheme composed of the shortest path; S12, checking and releasing the physical resources of the bottom layer occupied by the SR which reaches the online working time, and realizing the dynamic deployment of the SFC; The invention solves the problems of low practicability, low utilization rate of network resources andlow deployment efficiency existing in the prior art.