Disclosed is a blockchain-based tax administration method. The blockchain-based tax administration method comprises the following steps: a first node collecting tax data of a preset tax platform (S10); verifying the authenticity of the tax data (S20); and when the tax data is authentic, storing the tax data in the first node, such that a second node of a blockchain where the first node is located performs tax processing by means of the tax data, wherein the tax processing comprises tax payment processing and/or tax refund processing (S30). Further disclosed are a blockchain-based tax administration apparatus and a computer storage medium. The tax data of the tax platform is collected by means of blockchain technology, and the tax processing is performed according to the authentic tax data stored in a blockchain node, thereby avoiding the inauthenticity of tax data and improving the accuracy of tax administration.
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