Abstract: Investigation of aviation accident and compensation for damages of air crash accident are two different legal relationship. The report of aviation accident investigation can-t decide if liability for aviation accident damages exist or not, because it is neither a necessary premise nor the sole basis to confirm the liability of an accident compensation for damages. The purpose of the investigation is just to find out the cause for the accident and prevent it from happening again. The nature of the accident ascertained by the investigation report may produce certain effect on accident damages, that is, to exceed the legal restriction of accident damages. The payment receipt of the air crash compensation and a declaration about remove the responsibility which is concluded after air crash should not be affected by the report of aviation accident investigation.