The invention discloses an electric cooker, an anti-overflow control device and an anti-overflow control method thereof. The anti-overflow control method comprises the following steps: detecting whether a foam detection device fails or not after the electric cooker enters a heating phase; continuing to control the electric cooker to heat if the foam detection device fails such that the electric cooker enters a boiling phase; detecting whether the foam detection device is in the failure state or not after the electric cooker enters the boiling phase; and controlling the electric cooker to entera low-power cooking mode of non-overflow detection if the foam detection device is in the failure state. Detections can be made as to whether the foam detection device fails or not in each cooking phase of the electric cooker. Therefore, the electric cooker is prevented from overflowing or can continue to cook by preventing failure of the foam detection device. As a result, usage requirements ofa user are fully met.