The utility model provides an electric hay cutter belongs to agricultural machinery, and its constitution includes: support, actuating mechanism, wherein the guide rail among longeron in the support I and longeron II and the actuating mechanism passes through welded connection to guarantee that crank in the support slides in can the slide in actuating mechanism, has realized reciprocating of blade. The utility model relates to an electric hay cutter has solved and has taken time in when grass hand hay cutter, hard, intensity of labour is big and the problem of inefficiency. The utility model relates to an electric hay cutter's advantage lies in simple structure, and low in manufacturing cost is solidly durable, and it is convenient to use.