Safety protection device, steaming and baking equipment and control method

The invention provides a safety protection device, steaming and baking equipment and a control method, relates to the technical field of steaming and baking equipment, and solves the technical problem that scald and heat loss cannot be avoided at the same time when a box door is opened during steaming and baking. The safety protection device comprises a storage cavity, a switch piece, an air suction and exhaust assembly and a linkage assembly. The storage cavity is of an independent cavity structure and is communicated with the inner cavity of the heating box body through an opening part; the switch piece is arranged on the opening part and is in a linkage state with the box door of the heating box body, and communication or isolation of the storage cavity and the inner cavity of the heating box body can be realized when the box door is opened and closed; the air pumping and exhausting assembly is arranged in the storage cavity and used for pumping the high-temperature steam in the heating box body into the s