An electric compressor according to the present invention comprises: a main housing (4) having an intake chamber formed therein, a low-temperature refrigerant flowing into the intake chamber; an inverter housing (1) having at least one inverter element (2), which conducts heat with the main housing (4), fixed so as to contact an inner seating surface (1a), which is adjacent to the intake chamber; and at least one heat-radiating cover (6) positioned towards the main housing (4) while facing another surface of the inverter element (2) and surrounding the inverter element (2), a containing space (64) being formed in the heat-radiating cover (6) such that the inverter element (2) is contained therein.