A panel core. The panel core comprises several panel core units (1). The panel core units (1) are connected via connecting ribs (2) in the width direction of the panel core. The strength of connection between the panel core units (1) is increased, thus providing the panel core with increased strength. Also provided is an artificial panel comprising the panel core. The artificial panel also is provided with decorative plates (5) covering either end surface of the panel core and is provided with increased strength and extended service life.