An electric gardening machine includes a rod portion, including a machine tool head; an operation portion, disposed on the rod portion, including a first assembling portion having a first electrical terminal and a pressing member; and a controlling portion, including a shell body having a second assembling portion detachably assembled with the first assembling portion and a control module disposed in the shell body, a second electrical terminal of the control module being in electrical contact with the first electrical terminal, the control module being switchable by the pressing member to supply power to the machine tool head; wherein the shell body includes a first shell member and a second shell member connected with each other, the second electrical terminal is disposed through the first shell member, and the second assembling portion is disposed on the first shell member.