Boiler door with ash trough, featuring a circular door seat and a door cover. Its distinctive feature is the semi-circular ash trough placed inside the circular door seat, which is as long as the diameter of the furnace chamber.Characterized by a semi-circular ash trough placed inside a circular furnace door seat, with the diameter of the semi-circular ash trough connected by round steel bars. The center point of the round steel bars is connected to the center of the furnace door cover with a connecting rod, whose length aligns the fire seal hole on the furnace door seat with the front end of the semi-circular ash trough against the inner wall of the furnace chamber, preventing ash pollution during coal replacement, and solving the issue of loose fire sealing in coal stoves. It features a simple structure and ease of use.