The aim of the present study was to optimize culture condition for the expression of lipocortin 1_1-185 in a recombinant of Escherichia coli using batch system. Plasmid (pHT22) carrying lipocortin-1_1-185 gene was well maintained in the recombinant with the addition of amplicillin as a selection pressures. Optimum temperature was 28℃ for seed culture and 40℃ for main culture and the optimum pH was 7.0. The production of Lipocortin-1_1-185 was closely associated with cell growth and related to plasmid amplification.