Production method for recombinant human granulocyte colony-stimulating factor

The invention discloses production method for a recombinant human granulocyte colony-stimulating factor. According to the invention, an engineered strain of an escherichia coli expressed recombinant human granulocyte colony-stimulating factor is cultured to obtain an inclusion body, the engineered strain of the escherichia coli expressed recombinant human granulocyte colony-stimulating factor is pKG931/HB101, a culture method comprises multiplication culture and culture in a fermentation cylinder, an antibiotic-free medium containing yeast and peptone is employed in both culture, a high pressure homogenizer is used for breaking of bacteria, and denaturation, renaturation and chromatography are carried out so as to obtain a high purity G-CSF stock solution. The production method provided by the invention has the advantages of a short production period, high production efficiency, a great production scale, especial suitability for industrial production and reduction in production cost.