NOVELTY - Preparation of polymer lithium ion power battery comprises: providing an aluminum corrosion foil as a positive electrode current collecting body and a copper foil as negative electrode current collecting body, coating both the sides of the positive and negative electrode current collecting bodies with a layer of positive and negative electrode conducive carbon layer slurry in advance and respectively coating with positive and negative electrode active slurries, injecting electrolyte and triggering field polymerization via medium frequency electromagnetic sensing and heating at 60-120 degrees C.    USE - The polymer lithium ion power battery is useful as electric automobile power battery.    ADVANTAGE - The method: improves the utilization of the raw materials; reduces the battery cost; decreases the inner resistance between the active matter and the current collecting body; reduces the temperature raising of battery and improves the battery life and safety; and has uniform heating and quick speed, which improves the battery performance and consistency.    DETAILED DESCRIPTION - Preparation of polymer lithium ion power battery comprises: providing an aluminum corrosion foil as a positive electrode current collecting body and a copper foil as negative electrode current collecting body, coating both the sides of the positive and negative electrode current collecting bodies with a layer of positive and negative electrode conducive carbon layer slurry in advance and respectively coating with positive and negative electrode active slurries, injecting electrolyte and triggering field polymerization via medium frequency electromagnetic sensing and heating at 60-120 degrees C for 1-24 hours. The positive electrode conducive carbon layer slurry comprises (in wt.%): conductive carbon material (10-49), a positive electrode bonding agent (1-10) and a positive electrode dispersing agent (50-89). The negative electrode conducive carbon layer slurry comprises (in wt.%): conductive carbon material (10-49), a negative electrode bonding agent (1-10) and a negative electrode dispersing agent (50-89). The conductive carbon material is acetylene black, superconducting carbon black, conductive graphite, metal fiber, gas phase carbon fiber and/or nano carbon tube.