  In recent years, with the rapid development and popularization of BitCoin,
the research of blockchain technology has also shown growth. It has gradually
become a new generation of distributed, non-centralized and trust-based
technology solution. However, the blockchain operation is expensive and
transaction is delayed. Take BitCoin as an example. On the one hand, a block is
produced every ten minute. On the other hand, once the new block is generated,
it takes a certain time to propagate world wide. The slow speed of propagation
determines that BitCoin can not use too small block interval time. Ethereum
also faces similar problems, so the concept of uncle block was introduced to
reduce blockchain forks. This paper introduces a new tree structure based
broadcast propagation routing model, providing a novel method to organize
network nodes and message propagation mechanism. In oder to avoid the single
node failure problem, the tree cluster routing is proposed. The research shows
that the tree based routing can accelerate broadcast convergence time and
reduce redundant traffic.
