An air pocket module inserted into an air mattress includes multiple air pockets each having a hollow portion formed therein and configured to inflate due to air inflow or to deflate due to air outflow, and a bottom plate coupled to lower sides of the air pockets and configured to block the hollow portion of each of the air pockets, wherein the air pocket includes: a top surface portion forming a top surface, a side surface portion connected with the top surface portion and forming a side surface, and a contact portion protruding upwardly from a center of the top surface portion.