The invention discloses a lawnmower, in particular to an efficient lawnmower. The efficient lawnmower comprises a vertical bar handle, and a cutting fan arranged at the bottom end of the vertical barhandle. The cutting fan is communicated with a motor through a rotating shaft. The motor is arranged in the middle of the vertical bar handle. An air suction cover is arranged outside the cutting fanin a sleeving manner and a cavity is arranged in the air suction cover. An annular air suction port is arranged downward in the cavity. A cloth bag is communicated with the cavity from the above and avacuum pump is arranged at the other end of the cloth bag. According to the invention, an annular upward flowing wind curtain is added around the cutting fan, so that grass to be cut can stand up forcutting, thereby ensuring that no omission occurs. At the same time, a condition that the grass is cut repeatedly and is thus cut into too small pieces due to grass head hanging is reduced, and cut grass can have a uniform length, so that subsequent processing and the like can be facilitated.