The invention discloses a remote object calling method. The method includes creating a proxy object corresponding to a client; receiving a calling instruction sent by the corresponding client by using this proxy object and converting the calling instruction into instruction information matching with a client protocol; processing the instruction information to a unified data type calling instruction; positioning a business object according to the name of the business object in the unified data type calling instruction and obtaining a business object method tag through the business object; and calling the business object method through the tag. The invention also discloses a remote object calling system. According to the remote object calling method and system, the proxy object corresponding to the client is created in advance, the instruction information sent by the client is converted in accordance with the client protocol, and then the normalization is performed, so that the instruction information sent by a plurality of clients can be supported to achieve the multiplexing of business logic to further achieve the separation of the business logic from interfaces, the professional of business interfaces is shielded, system can be adapted to a plurality of clients, and the workload of staff and the cost are reduced.