The invention discloses a nivometer with the self-heat-supply function. The nivometer comprises an outer barrel body with an opening in the upper portion, a clamping piece is arranged on the outer barrel body, a filtering layer is arranged in the clamping piece, a polygonal roller is arranged in the filtering layer, and a spoon-shaped fan is arranged on the upper portion of the filtering layer; a funnel body is arranged on the lower portion of the filtering layer, and a water scraper is arranged on the water-facing surface attached to the funnel body and fixedly connected with the lower portion of the filtering layer; a collecting container is arranged below the funnel body, the water scraper is provided with a grinding and scraping part, and a quick lime layer is arranged at the position, close to the grinding and scraping part, of the inner wall of the outer barrel body. Compared with the prior art, because tree leaves and other impurities are blocked by the filtering layer, the tree leaves and other impurities are prevented from blocking the nivometer; because the filtering layer rotates and shakes on the polygonal roller, it can be avoided that snow water is accumulated in impurities falling onto the filtering layer; at low temperature, the grinding and scrapping part can rub the quick lime layer when rotating along with the water scraper, broken dust of quick lime flies out and makes contact with internal water, heat is generated, and internal icing is avoided.