The utility model belongs to the technical field of automobile engine, especially, relate to a timing belt front shroud dodges structure design, include: casing plate and lateral wall board, casing plate covers the timing belt of the preceding cylinder cap of engine, and casing plate's outer edge is provided with the lateral wall board, and the one end and the casing plate of lateral wall board are connected, the other end of lateral wall board and the laminating of the preceding cylinder cap of engine, casing plate's upper end is provided with the semicircular take -up pulley and dodges the mouth, is provided with a plurality of strengthening rib on casing plate's the inner wall, and casing plate's lower extreme is provided with the main shaft and dodges the mouth, one side that the lateral wall board is adjacent with the engine water pump is provided with the water pump bolt and dodges the mouth, the water pump bolt is dodged the mouth and for notch inside sunken on the lateral wallinboard wall, has been satisfied the demand that sets up timing belt front shroud in motor head's narrow and small space, when guaranteeing the leakproofness, avoids interfering with the emergence ofadversary's piece.