NOVELTY - A natamycin is produced by sterilizing culture medium and water, adding a pre-shaken strain for fermentation, separating a filtrate and a filter cake, subjecting the filtrate to three-waste treatment, extracting the filter cake, performing centrifugal separation, subjecting the filter residues to three-waste treatment, performing cooled crystallization, and performing third centrifugal separation to obtain a filter cake (natamycin) and a mother liquor.    USE - Method for production of natamycin (claimed).    ADVANTAGE - The production process is high in yield, safe, and environment-friendly.    DETAILED DESCRIPTION - Production of natamycin involves:    (A) filling water (50-80%) and a culture medium (20-50% of that of the water) into a tank body and sealing the tank body;    (B) putting the tank body into a large sterilizing pot for sterilization at 110-121 degrees C for 20-60 minutes;    (C) connecting an air introduction pipe on the tank body for introducing air, and switching on the power of the tank body and presetting at 35-45 degrees C and a stirring speed of 5-15 rpm;    (D) adding a pre-shaken strain for fermentation for 1-5 days at 45 degrees C;    (E) feeding the fermented liquid into a separator for separation to obtain a filtrate and a filter cake;    (F) subjecting the filtrate to three-waste treatment;    (G) feeding the filter cake into an extraction tank and adding water (2-5 times that of filter cake) for primary extraction;    (H) stirring for 5 hours;    (I) discharging the materials and performing primary centrifugal separation on the materials to obtain a primary filtrate and filter residues;    (J) feeding the filter residues into the extraction again and adding water (3-5 times that of filter residues) for secondary extraction;    (K) stirring for 5 hours;    (L) discharging the materials and performing secondary centrifugal separation on the materials to obtain a secondary filtrate and filter residues;    (M) subjecting the filter residues to the three-waste treatment;    (N) feeding the filtrates into a crystallization kettle for cooled crystallization at 10-20 degrees C for 3-4 hours;    (O) discharging the materials; and    (P) performing third centrifugal separation on the materials to obtain a filter cake (natamycin) and a mother liquor.