An extraction cassette for extracting a sample from a mixed liquid of sample and alcohol, comprising: a liquid receiving module for receiving the mixed liquid; and an extraction module, which communicates with the liquid receiving module and comprises an extraction module body, the extraction module body comprising: an expansion compartment; a reaction compartment, wherein the reaction compartment comprises a reaction compartment inlet, a reaction compartment outlet and a reaction compartment notch, the expansion compartment is connected to the reaction compartment notch, and the reaction compartment notch is located between the reaction compartment inlet and the reaction compartment outlet; and a filter disposed in the reaction compartment and disposed corresponding to the reaction compartment outlet; characterized in that the extraction module body further comprises: a collection compartment, which communicates with the reaction compartment outlet; a first waste-liquid compartment, which communicates with the reaction compartment outlet; and a second waste-liquid compartment, which communicates with the reaction compartment outlet; wherein the extraction module further comprises a first path and a second path, the first path connects the reaction compartment outlet to the first waste-liquid compartment and the second waste-liquid compartment, and the second path connects the reaction compartment outlet to the collection compartment; and wherein the collection department, the first waste-liquid compartment, second waste-liquid compartment and expansion compartment each comprises a pressure hole (121, 132, 142, 181, 182) adapted to be connected to an external pressure supply. a liquid receiving module for receiving the mixed liquid; and an extraction module, which communicates with the liquid receiving module and comprises an extraction module body, the extraction module body comprising: an expansion compartment; a reaction compartment, wherein the reaction compartment comprises a reaction compartment inlet, a reaction compartment outlet and a reaction compartment notch, the expansion compartment is connected to the reaction compartment notch, and the reaction compartment notch is located between the reaction compartment inlet and the reaction compartment outlet; and a filter disposed in the reaction compartment and disposed corresponding to the reaction compartment outlet; an expansion compartment; a reaction compartment, wherein the reaction compartment comprises a reaction compartment inlet, a reaction compartment outlet and a reaction compartment notch, the expansion compartment is connected to the reaction compartment notch, and the reaction compartment notch is located between the reaction compartment inlet and the reaction compartment outlet; and a filter disposed in the reaction compartment and disposed corresponding to the reaction compartment outlet; characterized in that the extraction module body further comprises: a collection compartment, which communicates with the reaction compartment outlet; a first waste-liquid compartment, which communicates with the reaction compartment outlet; and a second waste-liquid compartment, which communicates with the reaction compartment outlet; wherein the extraction module further comprises a first path and a second path, the first path connects the reaction compartment outlet to the first waste-liquid compartment and the second waste-liquid compartment, and the second path connects the reaction compartment outlet to the collection compartment; and wherein the collection department, the first waste-liquid compartment, second waste-liquid compartment and expansion compartment each comprises a pressure hole (121, 132, 142, 181, 182) adapted to be connected to an external pressure supply. a collection compartment, which communicates with the reaction compartment outlet; a first waste-liquid compartment, which communicates with the reaction compartment outlet; and a second waste-liquid compartment, which communicates with the reaction compartment outlet; wherein the extraction module further comprises a first path and a second path, the first path connects the reaction compartment outlet to the first waste-liquid compartment and the second waste-liquid compartment, and the second path connects the reaction compartment outlet to the collection compartment; and wherein the collection department, the first waste-liquid compartment, second waste-liquid compartment and expansion compartment each comprises a pressure hole (121, 132, 142, 181, 182) adapted to be connected to an external pressure supply.