The invention provides an anti-neglected loading structure of a steam valve for a cooking appliance and the cooking appliance. The cooking appliance comprises a device cover and a body, wherein a steam valve is mounted on the device cover of the cooking appliance. The anti-neglected loading structure comprises a first part and a second part, wherein the first part is arranged on the body, the second part is arranged on a cover body of the device cover, when the loading of the steam valve is neglected, the first part is intervened with the second part, and then the device cover cannot be openedor closed. According to the anti-neglected loading structure and the cooking device, the situation that the loading of the steam valve is neglected can be effectively prevented. When the loading of the steam valve is neglected, the device cover of the cooking appliance cannot be opened or closed, so that a user can be reminded of mounting the steam valve, the use reliability and safety of the cooking appliance are improved, and the use experience of the user is improved.