The invention discloses an automatic opening and shutting umbrella, comprising a rib, a rib tension spring, a king-rod, an upper cavity, a lower cavity, a push button, a main body, a conduit, an in-line spring, and an error-prevention spring. In the invention, an idle-popup resistant device composed of an idle-popup resistant tow rope, a ratchet wheel, a ratchet wheel bearing cover, a clockwork spring, an idle-popup resistant catch member and a returning spring is added, the device controls the snap-fit and separation of the idle-popup resistant catch member and the ratchet wheel by a sub-springhead to realize the opening and shutting of the function of idle-popup resistance, under the restriction of spring-force of the clockwork spring, a middle tube is pulled still by the idle-popup resistant draw-wire to shutting the umbrella to better control the shutting rhythm of the umbrella, so as to gradually shutting the umbrella, thus effectively preventing occurrence of idle-popup caused by incomplete push force during pushing the rib. The idle-popup resistant device coexists with the automatic opening and shutting device to supplement each other, lock each other without mutual interference; and the invention is compact in structure, high in safety and long in service life.