The utility model provides a web service combined system based on petri net, web service combined system includes cabinet body and cabinet door including rack, rack, web service combined system still including setting up CPU on the thing board is put to the second, be used for the combined management module and the database server that select the web service and go on making up, be connected with CPU by the combined management module, and database server and CPU are connected, CPU still is connected with the petri wire mould piece that is used for establishhing petri wire mould type. When using, during database server was implanted to the web service software of using needs, touch display screen was right with regard to the accessible the utility model discloses a service combined system operate, and then realize the combination to the web service, and the operation degree of difficulty of having practiced thrift the user greatly is more quick than the combination in the aspect of the software, has improved web service combined efficiency greatly.