Web back-end data access method and system

The invention discloses a web back-end data access method and system, and the method comprises the steps: extracting all key names and a key value reference address corresponding to each key name from a parameter definition object corresponding to web back-end data to be accessed; taking each key name as a key, and taking the value of the key value reference address corresponding to the key name in a data source as a key value, generating a parameter object with a plurality of key value pairs; sending a request corresponding to a request mode to a server based on the parameter object, wherein the request carries a request parameter; receiving a request return value generated by the server according to the received request; and converting the request return value into a return value Schema object in a Schema format, and injecting the return value Schema object in the Schema format into a data source. According to the method, the to-be-accessed web back-end data is modularized, an H5 manufacturing platform deve