The invention discloses a gum dipping technology and special gum dipping device for quick pultrusion of a composite core. The gum dipping device comprises a tool support, a yarn dividing frame, a gum dipping tank, a gum extruding roller, a yarn divider, a yarn collector, a precuring mould, a curing mould, a resin barrel, a control valve and a gum guiding pipe; the yarn divider is arranged on the tool support; the gum dipping tank is arranged below the tool support; the gum extruding roller and the yarn divider are sequentially arranged in the running direction of fibers; an outlet of the yarn divider is divided into two ways, one way sequentially passes through the precuring mould, the yarn collector and the curing mould, and the other way sequentially passes through the yarn collector and the curing mould; an outlet of the resin barrel is communicated with the gum dipping tank through the gum guiding pipe, and the gum guiding pipe is provided with the control valve. According to the gum dipping technology and special gum dipping device for quick pultrusion of the composite core, the resin barrel is provided with the control valve, the resin flow is adjusted through the control valve, resin can be injected into the gum dipping tank at the stable and continuous speed, when the resin flow and the resin amount used by pultrusion keep balanced, the freshness of the resin in the gum dipping tank is stable, and therefore the quality of a core rod obtained through pultrusion is stable.