The present disclosure provides a componentized curtain wall window, including an upper attached frame, a lower attached frame, and a plurality of window components. The plurality of window components are sequentially arranged at intervals along the same linear direction; the upper attached frame is arranged on one side surface of the plurality of window components and connected to the plurality of window components; the lower attached frame is arranged on the other side surface of the plurality of window components and connected to the plurality of window components; and a first sealing component and a first sealing block are arranged between adjacent window components, wherein a sealing space is formed between the first sealing component, the first sealing block, the upper attached frame, the lower attached frame, and the adjacent window components.