Block chain-based power construction business data processing method and system

The invention discloses a power construction business data processing method and system based on a block chain. The method comprises the following steps: carrying out hash calculation on original data, storing generated first hash values into a block, and carrying out one-to-one correspondence on the first hash values and the original data so as to store business information data on a block chain, and meanwhile, updating the data labels into a data directory; then acquiring and analyzing, by the block chain SDK, a to-be-queried data request, and acquiring the node information and an encryption algorithm of a block corresponding to the to-be-queried data request through the uplink data directory; performing Hash calculation on to-be-stored data by using an encryption algorithm of a block corresponding to the obtained to-be-queried data request to obtain a second Hash value; retrieving the corresponding block according to the node information and the data label of the block corresponding to the to-be-queried da