The invention discloses a system and method for credible authentication of container images based on blockchain technology. The system includes image signature registration components, decentralized image trusted authentication components, image signature verification components, and image warehouses; the method includes: Step 1: The original author uploads the image to the image signature registration component, and the image signature registration component calculates the image author information, digital signature, image name, and image ID based on the image and integrates them into trusted authentication information, then writes the image to the decentralized image In the trusted authentication component, the mirror image and trusted authentication information are combined into a smart contract and written into the blockchain network, and the mirror image is uploaded to the mirror warehouse; Step 2: The downloader downloads the mirror image from the mirror warehouse, and performs digital signature calculation on the mirror image , and obtain the image and digital signature from the decentralized image trusted authentication component; Step 3: Compare and verify the two digital signatures, if they are the same, allow the image to be used, if not, deny the image to be used.