Roof accumulated snow removing machine

The invention discloses a roof accumulated snow removing machine. The roof accumulated snow removing machine comprises a crawler, an outward extending mechanism, a snow shoveling mechanism, a conveying mechanism and a snow melting mechanism, wherein the outward extending mechanism is arranged on the front side of the crawler and used for scraping snow on the left side and the right side of the crawler to the position right ahead the snow shoveling mechanism; the snow shoveling mechanism is arranged at the front end of the crawler and provided with a snow shovel and a collecting device; the height of the snow shovel is adjusted through a pneumatic lifting mechanism by the collecting device; the collecting device is used for collecting snow at the rear end of the snow shovel; the conveying mechanism is arranged on the position, positioned on the rear side of the collecting device, of the crawler and used for conveying snow on the collecting device into a snow bin of the snow melting mechanism; a stirring device