The invention discloses a method, device and system for evaluating physiological index data based on blockchain, and a computer storage medium. The method comprises the steps: receiving physiologicalindex data uploaded by a user node, and issuing the physiological index data to a blockchain; determining an analysis node for evaluating the physiological index data, and sending an evaluation request to the determined analysis node; receiving the physiological index data obtained by the analysis node through the peer-to-peer data transaction according to the evaluation request, and generating aphysiological analysis report according to the physiological index data; performing the point-to-point transaction of the physiological analysis report with the user node, and issuing a transaction record to the blockchain. Through the above method, after a user uploads the physiological index data, the analysis is performed by an analyst to realize the monitoring of the physiological index data of the user. In addition, the data is stored based on the blockchain, so that the data cannot be artificially changed, and the authenticity and reliability of the data are improved. At the same time, the credit system of the evaluator of the identification of personal physiological indicators is established.