A securities trading system 10 which is an example of an financial products trading system includes: a switch 100 including a processor 104 which checks order issue information included in each of order messages received from a participant terminal 300 against a server management table 125, determines the address of a trading server 200 to which the order message is to be sorted, delivers the order message, receives a notification of a result of a predetermined process for the delivered order message from the trading server 200, and sends the notification to the participant terminal 300; and the trading server 200 including a processor 204 which performs a predetermined error check on each of the delivered order messages, sends the switch 100 an error notification or an order reception notification depending on a result of the error check, performs an execution process for each of the order messages whose result of the error check is normal, and sends the switch 100 an execution notification depending on the execution process.