Protection structure of flour milling machine

The utility model provides a flour grinding machine protection structure which comprises a grinding working platform, a plurality of negative pressure dust suction ports are formed in the grinding working platform, a protection shell is arranged on the outer side of the grinding working platform, an operation window is arranged at the front end of the protection shell, a transparent protection plate is arranged on the operation window, and a plurality of negative pressure dust suction ports are arranged on the transparent protection plate. A dust collection box body is arranged on the lower side of the polishing working platform and comprises a dust filtering box body, a negative pressure dust suction box body is arranged on the upper side of the dust filtering box body, an air outlet is formed in one side of the dust filtering box body, and the upper end of the negative pressure dust suction box body is installed on the polishing working platform; the lower end of the negative pressure dust collection box bo