The invention relates to a high-coupling co-frequency combiner, comprising a blade, an input port and an output port. The blade is located on the upper surface of the top cover, and the blade and thetop cover are of an integrated structure. The circuit board is arranged in the inside of the shell, and the circuit board and the shell are connected in a bolt fixing manner; The input port I is arranged at the left end of the circuit board, and the input port I is connected with the circuit board through welding; The output port is arranged on one side of the middle of the circuit board, and theoutput port is connected with the circuit board through welding. The utility model has the advantages of heat dissipation function, prolonging the service life of the device, high coupling property, improving the practical value and the like through the improvement in the structure, thereby effectively solving the problems and shortcomings proposed in the background technology of the invention.