The invention provides a supply chain finance realization method and a control system thereof based on a block chain double-chain structure, which adopts the block chain double-chain structure, namely, the generation process information of financing assets is recorded through an asset chain, including key state information such as order generation, warehousing change, logistics transportation, order signing-in and the like; the entire financing process information of the financing assets is recorded through the capital chain, including notes, asset ownership circulation, factoring services andother information, so that participants can trace the original information generated by the assets, reduce investment and financing risks, reduce human and material costs. In addition, the cross-validation of asset generation information and asset flow information, combined with the identity information and transaction content of participants, together are used as the basis for risk control and credit granting of financial institutions to promote the rapid operation of funds and business development. At the same time, the double-chain structure of asset chain and fund chain is adopted, whichis convenient for the administrator to set the authority and improves the security and confidentiality of the data.