Floating conveyor

The present invention provides a floating conveyor which floats an object for conveying and comprises the following components: a plurality of floating devices and each of which comprises an upper surface, a spraying-out opening which is provided on the upper surface for spraying out the fluid, and a fluid supplying device which pressurizes the fluid and supplies to the spraying-out opening through a flow path; a communicating path which is communicated with the flow path; a sensor for detecting the pressure in the communicating path; a conveying device for conveying the object; and a controller for determining the pressure abnormity according to the output of the sensor.