An ice crushing device, comprising: a housing assembly comprises a housing and an ice bucket supported in the housing; a driving mechanism for driving the ice bucket to rotate; an ice crushing mechanism disposed in the ice bucket; the housing assembly further comprises an ice-discharging plate provided at a bottom of the ice bucket, the ice-discharging plate is provided with an ice-discharging port communicated with the ice bucket, ice cubes prepared by an ice maker are discharged out of the ice-discharging port after being crushed in the ice bucket by the ice crushing mechanism, wherein the driving mechanism comprises a motor, a gear assembly driven by the motor, and a gear box accommodating the gear assembly, the gear box has an input end connected with the motor and an output end, wherein the gear box is mounted on the housing, and an axis of the output end is disposed in parallel with a rotation axis of the ice bucket, wherein the driving mechanism comprises a cylindrical gear driven by the gear assembly, an outer circumference of the ice bucket is provided with external teeth, and the cylindrical gear meshes with the external teeth to drive the ice bucket to rotate; wherein the gear assembly comprises a first bevel gear connected to the motor and a second bevel gear meshing with the first bevel gear, and the cylindrical gear and the second bevel gear are disposed coaxially and relatively fixed.; wherein the housing comprises a first portion that houses the ice bucket and a second portion in which the driving mechanism is mounted, the first portion is configured to match the outer circumference of the ice bucket, an opening is provided on the first portion, and a meshing portion of the cylindrical gear and the external teeth is located at the opening; wherein the housing assembly further comprises a bottom plate, a bottom of the second portion is open, the bottom plate covers the bottom of the second portion to seal the cylindrical gear between the second portion and the bottom plate, characterized in that the bottom of the ice-discharging plate is provided with a clamping slot, and a portion of the bottom plate is snap fitted in the clamping slot. a housing assembly comprises a housing and an ice bucket supported in the housing; a driving mechanism for driving the ice bucket to rotate; an ice crushing mechanism disposed in the ice bucket; the housing assembly further comprises an ice-discharging plate provided at a bottom of the ice bucket, the ice-discharging plate is provided with an ice-discharging port communicated with the ice bucket, ice cubes prepared by an ice maker are discharged out of the ice-discharging port after being crushed in the ice bucket by the ice crushing mechanism, wherein the driving mechanism comprises a motor, a gear assembly driven by the motor, and a gear box accommodating the gear assembly, the gear box has an input end connected with the motor and an output end, wherein the gear box is mounted on the housing, and an axis of the output end is disposed in parallel with a rotation axis of the ice bucket, wherein the driving mechanism comprises a cylindrical gear driven by the gear assembly, an outer circumference of the ice bucket is provided with external teeth, and the cylindrical gear meshes with the external teeth to drive the ice bucket to rotate; wherein the gear assembly comprises a first bevel gear connected to the motor and a second bevel gear meshing with the first bevel gear, and the cylindrical gear and the second bevel gear are disposed coaxially and relatively fixed.; wherein the housing comprises a first portion that houses the ice bucket and a second portion in which the driving mechanism is mounted, the first portion is configured to match the outer circumference of the ice bucket, an opening is provided on the first portion, and a meshing portion of the cylindrical gear and the external teeth is located at the opening; wherein the housing assembly further comprises a bottom plate, a bottom of the second portion is open, the bottom plate covers the bottom of the second portion to seal the cylindrical gear between the second portion and the bottom plate, characterized in that the bottom of the ice-discharging plate is provided with a clamping slot, and a portion of the bottom plate is snap fitted in the clamping slot.