The invention discloses a rule engine implementation method and device, and the method comprises the steps: defining a business rule according to a grouping management structure, so as to obtain at least one type of business rule; receiving a rule calling request, obtaining a rule type and loading a rule configuration file; according to the rule configuration file, obtaining a matching algorithm of a matched service rule and executing the matching algorithm; and returning a service rule when the execution result meets a preset condition. According to the rule engine implementation method provided by the invention, a storage format is flexibly configured by adopting a packet management structure, a json grammar can be adopted to express a service rule, and a complex service rule supports anative expression language, so that zero learning cost is realized; the rule configuration file supports various rule recording modes, and is high in flexibility and high in execution efficiency.