To provide a fluid machine-inspection method and its apparatus capable of efficiently removing a fluid for inspection adhered to a fluid machine during inspection.

The flowmeter of a fuel feed pump 30 is provided with a pump-holding member 10 and a cover member 40. In the space S2 tightly sealed by the cover member 40, the width of a clearance C between the inner periphery of the cover member 40 and the outer one of the feed pump 30 is made 0.5 mm. The cover member 40 is provided with an air feed pipe 44 for spraying air in the space S2 and an air collection pipe 45 for collecting air sprayed from the feed pipe 44.