Blockchain-based mutual assistance platform and device, and medium

The invention discloses a blockchain-based mutual assistance platform and device, and a medium, and aims to solve the problems that an existing financial mutual assistance platform is not transparentin data, is liable to cause money intruding and swallowing, and is not conducive to supervision. The platform comprises: a first obtaining module used for obtaining payment information of member nodesaccording to a preset time interval and writing the payment information into a block chain; a second acquisition module which is used for acquiring illness information corresponding to the request based on the mutual assistance request of the member nodes and writing the illness information into the block chain; a calculation module which is used for determining the total amount of existing fundsaccording to the payment information of each member node in the platform; and a deducting module which is used for deducting the required amount corresponding to the illness information from the total amount of the existing fu