A washing machine comprising: a cabinet configured to include an opening for loading and retrieving laundry at one side surface of the cabinet ; a tub configured to include an opening part corresponding to an opening of the cabinet at a front surface of the tub , and disposed inside the cabinet ; a drum configured to include an opening part corresponding to an opening part of the tub at a front surface of the drum , and rotatably installed inside the tub ; and a laundry-escape prevention unit configured to prevent the laundry from escaping from an inside of the drum , and coupled to the tub , wherein the laundry-escape prevention unit includes a guide member configured to include one side coupled to a front surface portion of the tub and the other side having a shape protruding toward a center of the opening of the cabinet , wherein the guide member includes: a first guide configured to extend from the tub toward the center of the opening ; and a second guide configured to extend from one side of the first guide in an inward direction of the drum , characterized in that the first guide includes an upper surface facing the center of the opening , a first inclined surface forming a first incline angle (θ1) with the upper surface and extending from one side of the upper surface when viewed from the center of the opening , and a second inclined surface forming a second incline angle (θ2) with the upper surface and extending from the other side of the upper surface when viewed from the center of the opening , and the first incline angle (θ1) is provided as greater than the second incline angle (θ2). a cabinet configured to include an opening for loading and retrieving laundry at one side surface of the cabinet ; a tub configured to include an opening part corresponding to an opening of the cabinet at a front surface of the tub , and disposed inside the cabinet ; a drum configured to include an opening part corresponding to an opening part of the tub at a front surface of the drum , and rotatably installed inside the tub ; and a laundry-escape prevention unit configured to prevent the laundry from escaping from an inside of the drum , and coupled to the tub , wherein the laundry-escape prevention unit includes a guide member configured to include one side coupled to a front surface portion of the tub and the other side having a shape protruding toward a center of the opening of the cabinet , wherein the guide member includes: a first guide configured to extend from the tub toward the center of the opening ; and a second guide configured to extend from one side of the first guide in an inward direction of the drum , a first guide configured to extend from the tub toward the center of the opening ; and a second guide configured to extend from one side of the first guide in an inward direction of the drum , characterized in that the first guide includes an upper surface facing the center of the opening , a first inclined surface forming a first incline angle (θ1) with the upper surface and extending from one side of the upper surface when viewed from the center of the opening , and a second inclined surface forming a second incline angle (θ2) with the upper surface and extending from the other side of the upper surface when viewed from the center of the opening , and the first incline angle (θ1) is provided as greater than the second incline angle (θ2). <EOS>