A washing machine, comprising: a main body in which a main entrance is formed at a front side of the main body; a tub inside the main body; and a main door (50, 250) that opens and closes to open and close, respectively, the main entrance, the main door including: a holder member (60, 260), a glass member (70, 270) including: a flange portion (71, 271) coupled to the holder member (60, 260) so that the glass member (70, 270) is supported by the main door (50, 250), and a body portion (72, 272) that, while the main door (50, 250) is closed, protrudes toward an inside of the tub, and an auxiliary entrance (73, 273) formed in the body portion (72, 272) and through which laundry may be put inside the tub while the main door is closed, and an auxiliary door (110, 300) that opens and closes, to open and close, respectively, the auxiliary entrance (73, 273), wherein the body portion (72, 270) includes: a downwardly slanted upper portion, and an upwardly slanted lower portion, characterized in that the body portion (72, 270) further includes an intermediate portion that is vertically arranged between the slanted upper portion and the slanted lower portion, wherein said intermediate portion is disposed toward the inside of the tub, and wherein the auxiliary entrance (73, 273) is formed in the intermediate portion. a main body in which a main entrance is formed at a front side of the main body; a tub inside the main body; and a main door (50, 250) that opens and closes to open and close, respectively, the main entrance, the main door including: a holder member (60, 260), a glass member (70, 270) including: a flange portion (71, 271) coupled to the holder member (60, 260) so that the glass member (70, 270) is supported by the main door (50, 250), and a body portion (72, 272) that, while the main door (50, 250) is closed, protrudes toward an inside of the tub, and an auxiliary entrance (73, 273) formed in the body portion (72, 272) and through which laundry may be put inside the tub while the main door is closed, and an auxiliary door (110, 300) that opens and closes, to open and close, respectively, the auxiliary entrance (73, 273), wherein the body portion (72, 270) includes: a downwardly slanted upper portion, and an upwardly slanted lower portion, characterized in that the body portion (72, 270) further includes an intermediate portion that is vertically arranged between the slanted upper portion and the slanted lower portion, wherein said intermediate portion is disposed toward the inside of the tub, and wherein the auxiliary entrance (73, 273) is formed in the intermediate portion. a holder member (60, 260), a glass member (70, 270) including: a flange portion (71, 271) coupled to the holder member (60, 260) so that the glass member (70, 270) is supported by the main door (50, 250), and a body portion (72, 272) that, while the main door (50, 250) is closed, protrudes toward an inside of the tub, and an auxiliary entrance (73, 273) formed in the body portion (72, 272) and through which laundry may be put inside the tub while the main door is closed, and an auxiliary door (110, 300) that opens and closes, to open and close, respectively, the auxiliary entrance (73, 273), wherein the body portion (72, 270) includes: a downwardly slanted upper portion, and an upwardly slanted lower portion, characterized in that the body portion (72, 270) further includes an intermediate portion that is vertically arranged between the slanted upper portion and the slanted lower portion, wherein said intermediate portion is disposed toward the inside of the tub, and wherein the auxiliary entrance (73, 273) is formed in the intermediate portion. a flange portion (71, 271) coupled to the holder member (60, 260) so that the glass member (70, 270) is supported by the main door (50, 250), and a body portion (72, 272) that, while the main door (50, 250) is closed, protrudes toward an inside of the tub, and an auxiliary entrance (73, 273) formed in the body portion (72, 272) and through which laundry may be put inside the tub while the main door is closed, and an auxiliary door (110, 300) that opens and closes, to open and close, respectively, the auxiliary entrance (73, 273), wherein the body portion (72, 270) includes: a downwardly slanted upper portion, and an upwardly slanted lower portion, characterized in that the body portion (72, 270) further includes an intermediate portion that is vertically arranged between the slanted upper portion and the slanted lower portion, wherein said intermediate portion is disposed toward the inside of the tub, and wherein the auxiliary entrance (73, 273) is formed in the intermediate portion. a downwardly slanted upper portion, and an upwardly slanted lower portion, characterized in that the body portion (72, 270) further includes an intermediate portion that is vertically arranged between the slanted upper portion and the slanted lower portion, wherein said intermediate portion is disposed toward the inside of the tub, and wherein the auxiliary entrance (73, 273) is formed in the intermediate portion.