A gas blinder (10) comprises a fixed gasbag (11), a gas charging control device (13), and a gas discharging control device (15). The gas charging control device (13) and the gas discharging control device (15) are both electrically connected to a control device (16). The fixed gasbag (11) comprises a first gas intake opening (1101) and a first gas discharging opening (1103). The gas charging control device (13) is in sealed connection with the first gas intake opening (1101), and is used for charging, under the control of the control device (16), gas into the fixed gasbag (11) through the first gas intake opening (1101). The gas discharging control device (15) is in sealed connection with the first gas discharging opening (1103), and is used for discharging, under of the control of the control device (16), gas in the fixed gasbag (11) through the first gas discharging opening (1103). A wearable device using the gas blinder (10). The gas blinder (10) has a good light avoiding effect and a good wear comfort.
