The present invention has a purpose to provide a mowing machine having a protective plate and a blade cover. The mowing machine comprises: a handlebar (10) a driving part (20) which is mounted to an end part of the handlebar (10) a rotary body (30) which moves in accordance with the operation of the driving part (20) a blade (40) which is mounted to a side of the rotary body (30) and rotates and a bottom plate (50) which combines the rotary body (30) to be moved and protect the blade (40) from impacts resulting from the bouncing action of stones. The mowing machine having a protective plate and a blade cover for removing weeds or brush in accordance with a spreading of the blade (40) by the movement of the rotary body (30) is configured in a method such that: a number of protective protrusions (52) for protecting the blade to the outside of the bottom plate (50) a protective cover (60) for covering the driving part (20) to be coupled in a state of being adjoined with a coupling measure at both sides and idling of the bottom plate (50) can be prevented by connecting any one of a second fixing body (54) protruded from a side of the protective cover (60) and a protective process (52) of the bottom plate (50). The present invention has very useful advantages of preventing damage to a blade by directly forming a protective process on the bottom plate, preventing failure of the driving part or delay of work by winding the driving part with long weeds to form a protective cover, and preventing idling of the bottom plate by connecting the bottom plate to a protective process.COPYRIGHT KIPO 2015본 발명은 손잡이(10)와, 상기 손잡이(10)의 선단부에 장착되는 구동부(20)와, 상기 구동부(20)의 작동에 따라 회동하는 회전체(30)와, 상기 회전체(30)의 측면에 장착되어서 회전하는 칼날(40)과, 상기 회전체(30)가 회동할 수 있게 결합되게 하고 상기 칼날(40)을 돌의 튐 작용에 의한 충격으로부터 보호하는 바닥판(50)으로 이루어지되, 상기 회전체(30)의 회동에 의한 상기 칼날(40)의 펼쳐짐에 따라서 잡초 또는 잡목을 제거하는 칼날보호판과 덮개를 구비하는 예초기에 있어서, 상기 바닥판(50)의 외측으로 칼날을 보호하기 위한 다수 개의 보호돌기(52)가 돌출되도록 하고, 양측에서 결합수단에 의해 서로 맞댄 상태로 결합되어 구동부(20)를 커버하기 위한 보호덮개(60