The invention discloses a rain-proof sun-shade device with intelligent opening and closing functions. The device comprises a support mechanism, a driving mechanism, a transmission mechanism, an extension mechanism, a sensing mechanism and an intelligent control mechanism; the upper end of the support mechanism is connected with the driving mechanism, the driving mechanism is connected with the transmission mechanism, and the transmission mechanism is connected with the extension mechanism; the sensing mechanism is used for sensing and collecting weather conditions and transmitting collected data to the intelligent control mechanism; after the intelligent control mechanism processes and contrasts the data, the intelligent control mechanism controls the driving mechanism to drive the transmission mechanism, so that the extension mechanism is driven to run, and therefore automatic opening and closing of the rain-proof sun-shade device can be achieved. The rain-proof sun-shade device can be intelligently opened and closed, so that according to the changes of the weather conditions, extension or closure can be automatically achieved to adapt to the changes.