A cooking appliance comprising: a housing having a bottom part , a first side part and a second side part facing each other, and a back part , and a cooking compartment formed therein, wherein the housing has an upper surface and a front surface which are open, and the open front surface and the open upper surface of the housing are connected to each other to form one opening; and a door for opening and closing the cooking compartment , wherein the door is rotatable about a rotation axis parallel to an upper edge of the back part of the housing , and wherein the door includes a door upper surface part for covering the upper surface of the housing and a door front surface part extending from a front portion of the door upper surface part for covering the front surface of the housing ; wherein the cooking appliance further comprises: a pair of hinge assemblies that are disposed on either side of the housing and rotatably couple the door upper surface part of the door to the housing ; wherein one of the pair of hinge assemblies is coupled with the first side part , and the other of the pair of hinge assemblies is coupled with the second side part ; and a cabinet covering the first and second side parts and the back part of the housing and being spaced apart therefrom, wherein the hinge assembly coupled with the first side part is disposed in a space between the first side part and the cabinet and the hinge assembly coupled with the second side part is disposed in a space between the second side part and the cabinet . a housing having a bottom part , a first side part and a second side part facing each other, and a back part , and a cooking compartment formed therein, wherein the housing has an upper surface and a front surface which are open, and the open front surface and the open upper surface of the housing are connected to each other to form one opening; and a door for opening and closing the cooking compartment , wherein the door is rotatable about a rotation axis parallel to an upper edge of the back part of the housing , and wherein the door includes a door upper surface part for covering the upper surface of the housing and a door front surface part extending from a front portion of the door upper surface part for covering the front surface of the housing ; wherein the cooking appliance further comprises: a pair of hinge assemblies that are disposed on either side of the housing and rotatably couple the door upper surface part of the door to the housing ; wherein one of the pair of hinge assemblies is coupled with the first side part , and the other of the pair of hinge assemblies is coupled with the second side part ; and a cabinet covering the first and second side parts and the back part of the housing and being spaced apart therefrom, wherein the hinge assembly coupled with the first side part is disposed in a space between the first side part and the cabinet and the hinge assembly coupled with the second side part is disposed in a space between the second side part and the cabinet . a pair of hinge assemblies that are disposed on either side of the housing and rotatably couple the door upper surface part of the door to the housing ; wherein one of the pair of hinge assemblies is coupled with the first side part , and the other of the pair of hinge assemblies is coupled with the second side part ; and a cabinet covering the first and second side parts and the back part of the housing and being spaced apart therefrom, wherein the hinge assembly coupled with the first side part is disposed in a space between the first side part and the cabinet and the hinge assembly coupled with the second side part is disposed in a space between the second side part and the cabinet . <EOS>