The invention discloses a fast connection device for a calcium and aluminum core wrapped coil. The fast connection device comprises a spring component. Metal casing pipes are connected to the inner walls of the two sides of the spring component in a clamped manner correspondingly. The end, far away from the spring component, of each metal casing pipe is provided with a fixing device. Each fixing device comprises a metal pipe. The side wall of each metal pipe is connected with the inner wall of the corresponding metal casing pipe in a sleeved manner. The end, far away from the spring component,of each metal pipe is provided with four clamping blocks, wherein the clamping blocks are distributed in an equally-spaced manner. A metal adjustment screw cap is connected to the position, close tothe corresponding clamping blocks, of the side wall of each metal pipe in a threaded manner. The outer wall of the side, far away from the corresponding metal adjustment screw cap, of each clamping block is provided with sawtooth-shaped antiskid grooves. A counter bored hole is formed in the side wall of each metal adjustment screw cap. A hexagonal socket fastening bolt is connected into each counter bored hole in a threaded manner. The fast connection device can be bent conveniently; the calcium and aluminum core wrapped coil can be wound and knotted conveniently; the fast connection device is convenient to contain; the length of the fast connection device can be adjusted; the clamping amount of the calcium and aluminum core wrapped coil can be adjusted conveniently; the fast connection device is convenient to adjust; and work efficiency can be improved conveniently.