Electronic bill information processing method and device, electronic equipment and medium

The invention discloses an electronic bill information processing method and device, electronic equipment and a medium. The method comprises: after a to-be-written field used for writing a blank billis obtained, judging whether the to-be-written field contains sensitive information or not to realize detection of the to-be-written field; performing hash operation on the to-be-written field when the to-be-written field does not contain the sensitive information, and storing an obtained hash result on a block chain after signature verification is passed. According to the embodiment of the invention, the fields corresponding to the electronic bill are stored through the blockchain network, so that the fields cannot be tampered after being linked, and the authenticity of a supervisor during bill checking in the later period is effectively ensured. Besides, before the fields are linked, sensitive information detection is carried out on the fields, so that the problem that the fields containing the sensitive informa