The disclosure relates to a cooking appliance capable of reducing noise generated when a door is closed using a buffer member that is easily fixed to a hinge unit. The cooking appliance includes a main body, a cooking chamber provided to have a front surface opened inside the main body, a door to open and close the cooking chamber, a hinge unit coupled to the main body to rotatably support the door, and a buffer member fixed to the door to buffer an impact generated when the door is closed by contacting the hinge unit when the door is closed.