A laundry treating apparatus, comprising: a main body having a front panel disposed with a laundry inlet port; a laundry accommodating portion disposed inside the main body and configured to receive laundry to an inside of the laundry accommodating portion through the laundry inlet port therein; and a door rotatably provided on the front panel to open and close the laundry inlet port, wherein the door comprises: an outer frame disposed toward an outer side of the main body, when the door is closed; an inner frame coupled to the outer frame, and disposed at a rear of the outer frame and toward an inner side of the main body; wherein the inner frame comprises a handle formed on a rear surface of the inner frame facing a direction opposite to the outer frame; a hook protruding from an outer circumference of the outer frame to cover a side surface of the handle; a hook coupling portion protruding from the side surface of the handle to engage with the hook; and at least one reinforcing rib protruding from a surface of the handle facing a rear surface of the outer frame to be in contact with the rear surface of the outer frame; wherein a sum of a height of the reinforcing rib from the surface of the handle from which the at least one reinforcing rib protrudes and of the thickness of the handle is less than a protruding length of the hook from the rear surface of the outer frame. a main body having a front panel disposed with a laundry inlet port; a laundry accommodating portion disposed inside the main body and configured to receive laundry to an inside of the laundry accommodating portion through the laundry inlet port therein; and a door rotatably provided on the front panel to open and close the laundry inlet port, wherein the door comprises: an outer frame disposed toward an outer side of the main body, when the door is closed; an inner frame coupled to the outer frame, and disposed at a rear of the outer frame and toward an inner side of the main body; wherein the inner frame comprises a handle formed on a rear surface of the inner frame facing a direction opposite to the outer frame; a hook protruding from an outer circumference of the outer frame to cover a side surface of the handle; a hook coupling portion protruding from the side surface of the handle to engage with the hook; and at least one reinforcing rib protruding from a surface of the handle facing a rear surface of the outer frame to be in contact with the rear surface of the outer frame; wherein a sum of a height of the reinforcing rib from the surface of the handle from which the at least one reinforcing rib protrudes and of the thickness of the handle is less than a protruding length of the hook from the rear surface of the outer frame. an outer frame disposed toward an outer side of the main body, when the door is closed; an inner frame coupled to the outer frame, and disposed at a rear of the outer frame and toward an inner side of the main body; wherein the inner frame comprises a handle formed on a rear surface of the inner frame facing a direction opposite to the outer frame; a hook protruding from an outer circumference of the outer frame to cover a side surface of the handle; a hook coupling portion protruding from the side surface of the handle to engage with the hook; and at least one reinforcing rib protruding from a surface of the handle facing a rear surface of the outer frame to be in contact with the rear surface of the outer frame; wherein a sum of a height of the reinforcing rib from the surface of the handle from which the at least one reinforcing rib protrudes and of the thickness of the handle is less than a protruding length of the hook from the rear surface of the outer frame.