Business data exchange system and business data exchange method

A business data exchange system, comprising:

• a software as a service processor, disposed in a cloud server, and coupled to a software as a service application program;
• and
• a tenant processor, coupled to the software as a service processor and an application system, wherein the tenant processor and the application system are disposed in a tenant server, and the tenant server set up on-premises, wherein the application system comprise an application program,
• wherein in response to the software as a service application program receives an operation command of an user to call the application program of the application system, the software as a service processor transmits call information to the tenant processor, through an exclusive transmission channel, the call information includes an application system name and an application program name,
• wherein the tenant processor receives the call information and parses the call information to call the application system and transmit the call information to the application system according to the application system name,
• wherein the application system parses the call information and performs logical processing of the application program to generate business data according to the application program name, and the application system returns the business data to the software as a service application program,
• wherein the business data comprises at least one of a work order number, a production product name, and a production quantity.