The invention discloses a dried potato powder production device for food processing. The device comprises a processing box body, an internal smashing structure and an internal grinding structure, theinternal grinding structure comprises an internal box body, an internal telescopic rod, an internal motor, a rotating plate, a bottom plate and a cross smashing cutter, and the internal smashing structure comprises a primary smashing structure and an extruding and grinding structure; and the primary smashing structure comprises a bottom plate control structure, a top motor, a top telescopic rod, aguide plate, a fixing groove, a pressing plate, a spiral cutter and a transverse cutter, and the extruding and grinding structure comprises a power structure, a rotating shaft, a fixing base, a sliding plate, a reciprocating spring and a rotating roller. The spiral cutter and the transverse cutter are arranged, the crushing effect is very good, through the rotating roller which reciprocates, rawmaterials are ground in a reciprocating manner, meanwhile, the smashing effect is better through the cross smashing cutter, and the efficiency of converting potatoes into dried potato powder is higher.