A cooking appliance (1, 2) having a cooling system, the cooking appliance (1, 2) comprising: an oven having a cooking chamber; a cooktop (20, 20') provided above the oven; a first electrical component (30, 31) disposed in a front surface of the cooktop (20, 20'); a first suction port disposed in an upper portion of a front surface of the oven below the first electrical component (30, 31); a second suction port disposed in the front surface of the cooktop (20, 20') above the first electrical component; a first cooling duct provided between a top surface of the oven and a bottom surface of the cooktop (20. 20') and including a front end configured to communicate with the first suction port and a communication port provided in a top surface of the first cooling duct; an exhaust port disposed at a rear portion of a top surface of the cooktop (20, 20') and configured to communicate with a rear end of the first cooling duct; a second cooling duct configured to communicate with the first electrical component (30, 31), provided above the first cooling duct and formed by the cooktop (20, 20') itself, and including a front end configured to communicate with the second suction port and including an outlet formed in the bottom surface of the cooktop (20, 20') at a position behind the first electrical component (30, 31) with respect to an air moving direction; and characterized in, a bottom surface of the cooktop (20, 20') is spaced apart from a top surface of the first cooling duct, and a connection duct is provided in a space between the bottom surface of the cooktop (20, 20') and the top surface of the first cooling duct to connect the first cooling duct and the second cooling duct from the outlet of the second cooling duct to the communication port of the first cooling duct; and an exhaust fan configured to draw air into the first suction port and through the first cooling duct, draw air into the second suction port and through the second cooling duct to the first cooling duct so that air discharged from the outlet of the second cooling duct is introduced into the first cooling duct through the connection duct and the communication port, mixed with the air drawn through the first cooling duct, the mixed air passing through the first cooling duct to the exhaust fan and discharged from the first cooling duct through the exhaust port. an oven having a cooking chamber; a cooktop (20, 20') provided above the oven; a first electrical component (30, 31) disposed in a front surface of the cooktop (20, 20'); a first suction port disposed in an upper portion of a front surface of the oven below the first electrical component (30, 31); a second suction port disposed in the front surface of the cooktop (20, 20') above the first electrical component; a first cooling duct provided between a top surface of the oven and a bottom surface of the cooktop (20. 20') and including a front end configured to communicate with the first suction port and a communication port provided in a top surface of the first cooling duct; an exhaust port disposed at a rear portion of a top surface of the cooktop (20, 20') and configured to communicate with a rear end of the first cooling duct; a second cooling duct configured to communicate with the first electrical component (30, 31), provided above the first cooling duct and formed by the cooktop (20, 20') itself, and including a front end configured to communicate with the second suction port and including an outlet formed in the bottom surface of the cooktop (20, 20') at a position behind the first electrical component (30, 31) with respect to an air moving direction; and characterized in, a bottom surface of the cooktop (20, 20') is spaced apart from a top surface of the first cooling duct, and a connection duct is provided in a space between the bottom surface of the cooktop (20, 20') and the top surface of the first cooling duct to connect the first cooling duct and the second cooling duct from the outlet of the second cooling duct to the communication port of the first cooling duct; and an exhaust fan configured to draw air into the first suction port and through the first cooling duct, draw air into the second suction port and through the second cooling duct to the first cooling duct so that air discharged from the outlet of the second cooling duct is introduced into the first cooling duct through the connection duct and the communication port, mixed with the air drawn through the first cooling duct, the mixed air passing through the first cooling duct to the exhaust fan and discharged from the first cooling duct through the exhaust port.