Music stand capable of freely changing length of music panel

The utility model relates to musical instrument auxiliary articles, in particular to a music stand capable of freely changing the length of a music score panel. The music score plate comprises a support frame and a main music score plate arranged on the support frame, a first auxiliary music score plate is arranged on one side of the main music score plate, and a second auxiliary music score plateis arranged on the outer side of the first auxiliary music score plate; the first auxiliary music score plate is connected with the main music score plate through a slideway assembly, and the first auxiliary music score plate transversely slides on the main music score plate; the second auxiliary music score plate is hinged to the first auxiliary music score plate and rotates relative to the first auxiliary music score plate. The length of the music score plate can be freely adjusted, and a plurality of music scores can be placed at the same time, thereby reducing troubles caused by multipletimes of replacement and f