Rotary sealed suction apparatus and suction-type auto-moving apparatus having the apparatus

A rotary sealed suction apparatus (2) comprises: rotary pieces (61) rotating opposite, a fixed piece (62), and a suction cup (21). An air extraction opening (611) is provided at the rotary piece (61). The fixed piece (62) is connected to the suction cup (21) sealing the working surface. The suction cup (21), the rotary piece (61), and the fixed piece (62) enclose a cavity. A sealing ring (64) is provided between the rotary piece (61) and the fixed piece (62). The rotary sealed suction apparatus (2) and an auto-moving apparatus having the rotary sealed suction apparatus (2) can ensure airtightness of an air extraction channel, and prevent a phenomenon of a slip or an inadequate or imprecise rotation that occurs because of an insufficient suction force of a suction cup during working of a cleaning apparatus.