The invention discloses a crimping machine for manufacturing and spinning of cellulose acetate fiber, which comprises an upper roller, a lower roller, an upper tool edge, a lower tool edge, an upper tool edge base plate, a lower tool edge base plate, and a press plate. The crimping machine is characterized in that an upper tool edge steam inlet and a steam channel are formed in the upper tool edge base plate; a steam channel is formed in the upper tool edge and is communicated with the steam channel formed in the upper tool edge base plate; an upper roller steam blowing hole is formed in the upper tool edge; a lower tool edge steam inlet, a lower tool edge steam condensate outlet and a steam channel are formed in the lower tool edge base plate; a steam channel is formed in the lower tool edge, and is communicated with the steam channel in the lower tool edge base plate; a lower roller steam blowing hole is formed in the lower tool edge. Steam is ejected onto the surface of the crimped fiber, heats the fiber silk ribbon, serves a lubrication function to reduce damage to the ribbon and reduces the pressure of the press plate, so as to ensure constant temperature of the roller surface to prevent the roller from overheating damage.