A power storage module includes: a plurality of power storage elements; a plurality of cooling members each of which has a coolant and a sealing body hermetically sealing the coolant, is stacked on the power storage element, and is configured to form a bulging portion by deformation of the sealing body caused by evaporation of the coolant at an extension portion extending in a region not overlapping the power storage element; and a heat dissipation member that receives heat of the plurality of cooling members and dissipates the heat to an outside. The heat dissipation member has a spacer portion that is disposed between the adjacent extension portions of the plurality of cooling members and is configured to abut with the bulging portion.