The invention discloses a novel house building bay window cabinet, and relates to the technical field of house building structures. The novel house building bay window cabinet is characterized by comprising a cabinet body, a curtain rod is slidably arranged on the cabinet body, and first stopping assemblies for limiting movement of the curtain rod are arranged in the cabinet body; a downward moving part of which the bottom is a first tip is slidably arranged on the curtain rod, first sliding rods are slidably arranged in the curtain rod, one end of each first sliding rod is in contact with thetip of the downward moving part, and the other end of each first sliding rod is in contact with the corresponding first stopping assembly; when the first sliding rods move towards the first stoppingassemblies, the first stopping assemblies move and do not apply resistance to the curtain rod; the lower end of the curtain rod is fixedly provided with a vertical rod, a second sliding rod is slidably arranged in the cabinet body, a slant groove is formed in the second sliding rod, the lower end of the vertical rod abuts against the slant groove, and a drainage area is arranged on the cabinet body. According to the novel house building bay window cabinet, the curtain rod used for hanging curtain cloth serves as a supporting rod for airing clothes, and the novel house building bay window cabinet has the effect of conveniently airing the clothes.