The invention relates to a ladle tilting mechanism, which is characterized in that U-shaped brackets for supporting ladle round trunnions are arranged in a pit in a symmetric manner, a tie-beam is used for connecting two U-shaped brackets, one U-shaped bracket is connected with a drive tilting frame, and the other U-shaped bracket is connected with a driven tilting frame; a concentric rotation shaft is respectively arranged at the outer side of each of the tilting frame, the rotation shaft of the drive tilting frame is connected with an electric drive device via a drive side revolting bracket, and the rotation shaft of the driven tilting frame is arranged in a driven side revolting bracket; the two tilting frames are respectively provided with a clamping frame mechanism for clamping the round trunnions; each clamping frame mechanism is provided with a locking mechanism; and the outer side of the drive side revolting bracket is provided with a locating mechanism for locating the ladle rotation angle. The invention has the advantages of reasonable design, compact structure, safe operation, convenient use and the like; and ladles can rotate within 0-18 degrees without being hoisted by a crown block to tilt, thus reducing occupied time and operation difficulty of the crown block, lowering abrasion of the ladle trunnions, prolonging the service life thereof.