The invention relates to the field of lamps, and aims at providing a wall embedding type lighting emergency lamp. The wall embedding type lighting emergency lamp comprises a lamp box and a light source arranged in the lamp box and further comprises a rectifier, an undervoltage relay, a control circuit board of a transformer and a storage battery, wherein the rectifier and the undervoltage relay are arranged in the lamp box, and the input end of the transformer is connected with a municipal net circuit. A flange is arranged on the outer side of the lamp box in a surrounding manner. When the municipal net circuit supplies power, the light source works, an armature of the undervoltage relay is attracted, and the storage battery is charged through the rectifier. When the municipal net circuit is powered off, the armature of the undervoltage relay is released, a contact mechanism is reset, and the control circuit board controls the storage battery to supply power to the light source. When the wall embedding type lighting emergency lamp is used, the rear portion of the lamp box is embedded in a wall, and the flange is attached to the wall face. The wall embedding type lighting emergency lamp can carry out emergent lighting when a sudden power failure happens due to the sudden events such as power supply circuit faults or disasters, and during using, protruding wall faces are few, and the occupied space is small.