The invention relates to the technical field of data processing, and provides a service data processing method and device, computer equipment and a storage medium, and the method comprises the steps: receiving a processing request of service data of a to-be-processed service, querying an interface corresponding to an interface identifier carried in the processing request, and sending the query result to a server; obtaining business data from an interface corresponding to the interface identifier to obtain multiple pieces of business data, respectively obtaining a settlement target of each piece of business data, querying a corresponding relational expression according to the settlement target of each piece of business data to obtain multiple relational expressions, and combining all the relational expressions according to a preset combination rule to obtain a target relational expression; and judging whether the target relational expression accords with a preset rule, if so, configuring the multiple pieces of business data into the target relational expression, and calculating to obtain a business result, thereby realizing customized output through the configuration relational expression, quickly responding to business requirements, and improving the processing efficiency of the business data.