Portable folding music stand

The utility model relates to the field of music score supports, in particular to a portable folding music score support. The technical problems that although an existing folding music score support has certain foldability, a music score placing plate is generally of an integrally-formed structure, adjustment is limited, the size is still large after folding, carrying is not convenient, and the use effect is reduced are solved. Comprising placing racks, a first supporting assembly, a second supporting assembly, a third supporting assembly, a base, an anti-skid pad, a mounting seat, an adjusting nut, a first connecting block and a rotating shaft. An anti-skid pad can play an anti-skid role, an adjusting nut can rotate through a rotating shaft to adjust the angle, the first supporting assembly, the second supporting assembly and the third supporting assembly are all arranged to be of a foldable structure, the size of the music stand can be folded to the minimum when the music stand is not used, and the music sta