A locking structure for securing an electronic device includes a body, a worm shaft, a guide rod, a fixing base and a linkage set. When a user wants to connect the electronic device to another device, the user could insert the electronic device into the locking structure which is set on the device. Then, the user pushes down the electronic device to drive the locking structure and the worm shaft of the locking structure would be rotated from a releasing direction to a securing direction. When the user wants to release the electronic device, the user could push it back to the original position. Then, the worm shaft would be rotated from the securing direction to the releasing direction so the user could release the electronic device from the locking structure. Consequently, it is easy to secure or release the electronic device to another device through the locking structure.