Disclosed is a rideable electric mower, comprising: a seat (12) for a user to sit； a main rack (11) for carrying the seat (12)； a power output assembly (13), comprising a mowing element (131) for output power to effect a mowing function and a first motor (132) for driving the mowing element (131) to output the power； a walking assembly (14) capable of driving at least the rideable electric mower to walk on the ground in a first linear direction, and a second motor (143) for driving the walking assembly (14)； and a power supply device (16), comprising first battery packs (161) for supplying an energy source to the rideable electric mower, the first battery pack (161) comprising: a first battery pack housing (161b)； and a cell unit (161a) arranged inside the first battery pack housing (161b), wherein the power supply device (16) is mounted to the main rack (11), at least one of the first battery packs (161) in the power supply device (16) forms an insertable connection with the main rack (11), and the cell unit (161a) is a lithium cell. The rideable electric mower has a good applicability and low costs of use.
