The present invention relates to a combination of hammer, to a combination hammer which is integrally provided with a plurality of hammer hammer unit is a frame in more detail. The present invention includes a plurality of hammers are installed in the interior of the through in the longitudinal direction a plurality of sleeve cylinder units (102) and the suction channel 148. The Slice barrel study frame 100, which is formed 102 units ( 120) and the frame (mounted is fastened to the top of 100), connected to the outside of the air tank, each hammer unit (a plurality of the air supply line 152 and the suction channel (148 for supplying the air to 120)) and communicating with the suction passage 158, an upper frame 150 mounted on an inside space that is mounted and is fastened to the lower end of the frame 100, a plurality of bit barrel which correspond to the sleeve barrel study 102 study 302 drives the sub 300 that is formed through the inside in the longitudinal direction, and is provided through the drive sub 300, available lifting by a predetermined stroke to the drive sub (300) and one end of gwidubu (318 ) is projected in a lower surface of the drive sub 300 is configured to include a plurality of bits (310 310 ') for excavating the ground. There is an advantage that according to the combination hammer according to the present invention, the bit is possible to uniformly hit the ground, and as a whole can be further improved as a result the efficiency of the drilling operation.