The invention discloses a portable sound box. The portable sound box comprises sound production units, a slot, a power socket and music buttons and is characterized in that seven sound production units are arranged on the front surface of the portable sound box, the clamp is arranged on the back surface, the power socket is formed in one side face, and the different-style music buttons are arranged on the upper part, wherein the sound production units meet requirements for playing normal musical instruments; the sound box can be clamped on a waistband via the slot so as to be carried conveniently; the power socket is respectively used as a musical instrument connecting port, a charging port and an earphone jack so as to achieve a purpose that musical instrument fans practice musical instruments without disturbing the residents; and the music buttons are used for meeting requirements of playing different styles of music.