A clothes treating system including a first clothes treating apparatus including a first housing, and the first housing including a sliding guide portion on an upper surface of the first housing, and a leg seating portion at an end of the sliding guide portion; and a second clothes treating apparatus including a second housing, and the second housing including a leg on a rear side of a lower surface of the second housing. The first clothes treating apparatus and the second clothes treating apparatus are configured so that the leg is slidable along the sliding guide portion to seat the leg on the leg seating portion with a lower surface of the leg being below the upper surface of the first housing, to couple the second clothes treating apparatus to the first clothes treating apparatus with the second clothes treating apparatus above the first clothes treating apparatus.