A mower that has a mower main body (2) and a collector (9), comprising: a fixing mechanism (47, 48, 50) which fixes the collector (9) to a grass collecting position for collecting the grass, when the grass is mowed a fixing releasing mechanism (30, 32, 31) which releases the fixing a lifting part (65) which lifts the collector (9) from the grass collecting position to a discharge position for discharging the collected grass, when the fixing is released and a holding member (400) which is capable of holding, against the lifting, the collector (9) at a holding position in a vicinity of the grass collecting position, when the fixing is released, wherein the collector is (9) configured to be detachable from the rear part of the mower main body (2) in a state where the collector (9) is at the holding position.
