An ice crushing device, comprising a shaft seat with an ice outlet formed in the bottom, a fixed shaft fixedly disposed on the shaft seat, a drum rotationally disposed on the shaft seat by taking the fixed shaft as a rotation axis and an ice-incoming baffle plate is disposed at the top of the drum, wherein an ice cutter component is disposed inside the drum, and comprises at least one fixed ice cutter secured to the fixed shaft and at least one rotary ice cutter secured to an inner wall of the drum and capable of rotating with the drum; the rotary ice cutter has a first rotation direction for rotation relative to the fixed ice cutter to cut a whole piece of ice in the drum into crushed ice; the ice outlet is located at one side of the fixed shaft and provided with a crushed-ice discharge side for discharging the crushed ice; when rotating in the first rotation direction, the rotary ice cutter enters a space at an upper portion of the ice outlet from a position right above the crushed-ice discharge side of the ice outlet; the fixed ice cutter is located in a space at the upper portion of the ice outlet and provided with a cutter edge side for cutting the whole piece of ice; and the cutter edge side of the fixed ice cutter faces the crushed-ice discharge side; wherein the ice-incoming baffle plate is secured to the fixed shaft and provided with an ice inlet that allows the whole piece of ice at the top of the drum to enter the drum, wherein the ice inlet is located at one side of the fixed shaft, and the ice inlet and the ice outlet are mutually staggered in the first rotation direction; wherein in the first rotation direction, a front side edge and a rear side edge of the ice inlet are designed into saw-toothed structures; characterized by an ice exiting channel located below the ice outlet, wherein the ice exiting channel comprises a funneled ice receiving portion and a pipeline portion communicated with a lower end of the ice receiving portion, the ice exiting channel includes a first housing and a second housing which are separately detachable, two pairs of assembly edges that are fastened to be assembled to form the ice exiting channel are disposed between the first housing and the second housing, the assembly edges (9a, 9b) extend in a direction from an edge of the channel inlet to an edge of the channel outlet, the ice exiting channel is further provided with a funneled ice-receiving inner cover, the ice-receiving inner cover is embedded into the ice receiving portion and matches an inner wall of the ice receiving portion. the ice-incoming baffle plate is secured to the fixed shaft and provided with an ice inlet that allows the whole piece of ice at the top of the drum to enter the drum, wherein the ice inlet is located at one side of the fixed shaft, and the ice inlet and the ice outlet are mutually staggered in the first rotation direction; wherein in the first rotation direction, a front side edge and a rear side edge of the ice inlet are designed into saw-toothed structures; characterized by an ice exiting channel located below the ice outlet, wherein the ice exiting channel comprises a funneled ice receiving portion and a pipeline portion communicated with a lower end of the ice receiving portion, the ice exiting channel includes a first housing and a second housing which are separately detachable, two pairs of assembly edges that are fastened to be assembled to form the ice exiting channel are disposed between the first housing and the second housing, the assembly edges (9a, 9b) extend in a direction from an edge of the channel inlet to an edge of the channel outlet, the ice exiting channel is further provided with a funneled ice-receiving inner cover, the ice-receiving inner cover is embedded into the ice receiving portion and matches an inner wall of the ice receiving portion.