Disclosed is a production method of pancreatic hormone-producing cells in a form that mimicks the pancreatogenesis, the method comprising subjecting stem cells to the following steps:(1) cultivating stem cells in a medium containing a Rho kinase inhibitor,(2) cultivating the cells obtained in (1) in a medium containing a GSK3 inhibitor,(3) cultivating the cells obtained in (2) in a medium containing GSK3 inhibitor and an activator of activin receptor-like kinase-4,7,(4) forming a cell mass from the cells obtained in (3), and cultivating the cell mass in a suspension state in a medium,(5) cultivating the cells obtained in (4) in a medium containing a retinoic acid receptor agonist, an inhibitor of AMP-activated protein kinase and/or activin receptor-like kinase-2,3,6, an inhibitor of activin receptor-like kinase-4,5,7 and a cell growth factor, and(6) cultivating the cells obtained in (5).
