Spark machine isolation hood

The utility model provides an isolation hood of a spark machine, which belongs to the technical field of spark machines and comprises a cloth bag, a lower air bag is arranged on the lower portion of the cloth bag, an upper air bag is arranged on the upper portion of the cloth bag, and a first positioning portion and a second positioning portion are arranged on the upper air bag. And a fastener for fixing the second positioning part is arranged on the first positioning part. The air bag has the advantages that the rubber plug is opened, the upper air bag is inflated through an air pump or the mouth of a person, when the diameter of the main shaft of the spark machine is large, air with multiple punching points is filled in the upper air bag, so that the diameter of the annular upper air bag is enlarged to adapt to the main shaft with the large diameter, and when the diameter of the main shaft of the spark machine is small, the air bag is inflated. When the shielding can is used, a small amount of air is inject