A rocking head picture display device includes a casing and a rocking assembly received in the casing. The rocking device includes an electromagnetic device mounted to the bottom of the casing and a rocking device mounted to the top of the casing. The rocking device includes a pivotal shaft supported by the casing and a rocking arm extending downward next to the electromagnetic device. A circular plate shaped connector is eccentrically joined to the outer end of the pivotal shaft in front of the casing. A channel shaped base is joined to bottom of the casing to form a locating groove. A picture has a head portion adhered to the connector and a body portion rested in the locating groove. When the electromagnetic device is powered on, the rocking device is induced to swing with the connector and the head portion.