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 dischargeable 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 and a gear assembly driven by the motor, the gear assembly comprises a first bevel gear connected to the motor and a second bevel gear meshing with the first bevel gear, wherein the driving mechanism further comprises a cylindrical gear coaxially arranged with the second bevel gear, and a rotation axis of the second bevel gear is disposed in parallel with a rotation axis of the ice bucket, characterized in that the driving mechanism further comprises: a stop ring and a seal assembly that engage with each other are disposed between the second bevel gear and the cylindrical gear, the seal assembly matches the housing to separate the space between the second bevel gear and the cylindrical gear, the seal assembly comprises a raised ring raised in the axial direction, one end of the stop ring abuts against the bottom end surface of the second bevel gear, and the raised ring extends into the inside of the stop ring and overlaps the stop ring along the projection in the radial direction. 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 dischargeable 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 and a gear assembly driven by the motor, the gear assembly comprises a first bevel gear connected to the motor and a second bevel gear meshing with the first bevel gear, wherein the driving mechanism further comprises a cylindrical gear coaxially arranged with the second bevel gear, and a rotation axis of the second bevel gear is disposed in parallel with a rotation axis of the ice bucket, characterized in that the driving mechanism further comprises: a stop ring and a seal assembly that engage with each other are disposed between the second bevel gear and the cylindrical gear, the seal assembly matches the housing to separate the space between the second bevel gear and the cylindrical gear, the seal assembly comprises a raised ring raised in the axial direction, one end of the stop ring abuts against the bottom end surface of the second bevel gear, and the raised ring extends into the inside of the stop ring and overlaps the stop ring along the projection in the radial direction.