Disclosed are a blockchain system and a routing method of a routing node applied to a blockchain system. The system comprises at least one parallel chain, with the parallel chain comprising a routing node, at least one miner node and at least one simplified payment verification (SPV) node, wherein each miner node of each parallel chain stores data by using a distributed data blockchain; routing nodes of the at least one parallel chain are connected via a network; and a parallel chain corresponding to an account address bound to the SPV node is a parallel chain where the SPV node is located. A specific implementation of the system comprises: a routing node checking and forwarding a received transaction request to a miner node in the same chain or a routing node in a different chain, and synchronizing a blockchain of the miner node in the same chain of the routing node to a local blockchain in real time; and the miner node verifying a received post-signature transaction request from the routing node in the same chain and adding same into a set of local transaction requests to be processed. By means of the implementation, the number of transactions per second of the blockchain system is increased.
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