Provided is an oven capable of preventing hot air inside a cooking chamber from flowing to a camera when a door is opened. The oven includes: a main body; a cooking chamber provided inside the main body, wherein a front side of the cooking chamber opens; a door installed on the main body to open and close the cooking chamber; a camera positioned above the cooking chamber, and configured to photograph an inside of the cooking chamber; and a barrier module positioned inside the camera, and configured to allow or block an inflow of outside air to the camera according to opening or closing of the door.