Data transmission method and system based on block chain

The embodiment of the invention relates to the technical field of data transmission, and particularly discloses a data transmission method and system based on a block chain. According to the embodiment of the invention, a block chain data transmission channel is constructed; transmitting the trial-manufactured product data to a verification planning platform through a block chain data transmission channel; transmitting the auxiliary tool design model and the manufacturing process data to a verification planning platform through a block chain data transmission channel; and through the block chain data transmission channel, obtaining a virtual verification problem, and obtaining trial-production planning information. The trial-manufacture product data, the auxiliary tool design model and the manufacturing process data can be transmitted to the verification planning platform in real time through the block chain data transmission channel, and the virtual verification problem and the trial-manufacture planning inf