An electronic device holder is revealed. The electronic device holder includes a base, a top cover and a support member. In use, a control member of the support member is pressed so that a locking shaft is moved inwards to push a shaft part moving into a pivot hole of an assembly block of the base. And a teeth part around the shaft part is released from teeth of a locking hole. Thus the support member can be rotated to the required position. Without any force applied to the control member, the teeth part of the shaft part is engaged with the teeth of the locking hole again due to the elastic member. Thus the support member is locked, the support block is then rotated to the required position and an electronic device is leaning against the support member. Therefore users can use electronics conveniently, without holding them in hands.