A pedal stand for a musical instrument includes a main frame, a support rack foldably mounted on the main frame, and a locking device mounted between the main frame and the support rack to detachably lock the support rack on the main frame. Thus, when the push button of the locking device is pushed downward, the support rack is unlocked from the locking device and is pivotable relative to the main frame to fold the pedal stand, so that the pedal stand is folded easily and quickly. In addition, the user only needs to push the push button to fold the pedal stand, so that the pedal stand is folded in an energy-saving manner, thereby facilitating the user folding the pedal stand.