The invention discloses an engine hood for a diesel engine. An air cylinder cover hood is downwards mounted at the front end of the top of the diesel engine; the engine hood comprises a hood body; the front edge of the hood body abuts against one side of the air cylinder cover hood; the hood body and the air cylinder cover hood cover the top of the diesel engine together; and sound absorbing sponge is attached to the inner wall of the hood body. The engine hood can cover harnesses and partial pipelines of the diesel engine and reduce local noise at the upper end of the engine.