The utility model discloses an eight-well type heating and separating integrated device. A gas inlet pipeline is connected with eight gas inlet connectors of the integrated device, eight output pipelines, connected in parallel, of the integrated device are correspondingly connected with eight gas inlets of a heating device, the heating device is provided with eight gas outlet pipelines, the eight gas outlet pipelines are connected with eight flow switching devices through eight throttle valves connected in parallel, and the output ends of the eight flow switching devices are connected to a natural gas separating and metering pipeline branch and two output branches of a first downstream pipeline branch in parallel. The separating and metering pipeline branch is provided with a natural gas emptying branch and two output branches of a second downstream pipeline branch. In the natural gas emptying branch, the separating and metering pipeline branch is connected to a main emptying pipe connector through an emptying valve set. In the second downstream pipeline branch, the separating and metering pipeline branch is connected with a natural gas separating device inlet through a pipeline, an output pipeline of the natural gas separating device is connected with an inlet pipeline of a natural gas metering device, and an output pipeline of the natural gas metering device is connected with a downstream pipeline connector of the integrated device.