Abstract: This specification discloses an automatic opening and closing structure of a collapsible umbrella that allows the user to open the umbrella to use by pressing a button on the handle so that the runner departs from the hook block on the button and moves toward the notch, which further stretches out the umbrella. When pressing again the button, the sliding block on the button moves to push the connected pin within the handle, which further pushes the hook in the lower tube of the shaft out of the opening on the lower tube for storage. The hook then departs from the bullet head provided in the shaft, and the bullet head slides upward by the pulling of a string. By the spring force of the spring connected on the collapsible rib, the umbrella can be collapsed for storage.