Chromatograph infusion system calibrating device

The utility model discloses a verification device for a chromatographic instrument infusion system, which relates to the technical field of chromatographic instrument infusion system verification and comprises a chromatographic instrument infusion system body and a first test box, a liquid outlet pipe is mounted on the peripheral side of the chromatographic instrument infusion system body, a liquid inlet pipe is mounted on the peripheral side of the chromatographic instrument infusion system body, and a liquid outlet pipe is mounted on the peripheral side of the chromatographic instrument infusion system body. A hollow block is mounted at the top of the first test box, a sliding block is slidably mounted in the hollow block, and the top of the sliding block penetrates through the hollow block and is provided with a second test box. According to the utility model, when different chromatographic instrument infusion system bodies are met, the anti-falling cap is pulled, the locking rod is driven to slide towards