The invention discloses a conjugated porous polymer capacitance material and a preparation method and an application; the chemical structural general formula of the conjugated porous polymer contains a tricarbazole structural unit. The preparation method includes steps of performing nitration of tricarbazole and acquiring trinitro-tricarbazole; preparing tri-amino- tricarbazole by trinitro-tricarbazole; at last, linking tricarbazole with aldehyde group or anhydride to form the conjugated porous polymer; acquiring the capacitance material. The conjugated porous polymer capacitance material is wide in application of energy storage domain, and can realize the circular charge and discharge for many times; the specific capacitance attenuation rate is low, the circular stability is good, the material structure is new, the preparation method is simple, and the cost is low; therefore, the conjugated porous polymer capacitance material is the capacitance material greatly possessed of application potential.