The purpose is to eliminate problems such as diminished holding power and to reuse a circuit when an electrolytic capacitor has experienced a rise in internal pressure. Provided is an electrolytic capacitor socket (11) having a support (12) adapted to receive the bottom end faces of electrolytic capacitors (61) provided with leads (63, 64) on the bottom end faces of capacitor trunks (62), the support (12) being equipped with connecting terminals (31) for electrically connecting the leads (63, 64) to a circuit board (51). The electrolytic capacitor socket (11) is configured so that a retainer (13) for detachably retaining those sections of the capacitor trunks (62) of the electrolytic capacitors (61) that are on the side of the leads (63, 64) is formed in the support (12), and a recess (14) for permitting deformation of rubber seals (65) at the bottom of the capacitor trunks (62) of the electrolytic capacitors (61) is formed in the upper surface of the support (12).