The invention discloses an enterprise short message sending system and method. The system comprises a data maintenance unit, a short message processing unit, a scheduling and sending unit and a storage unit, wherein the data maintenance unit is used for maintaining an address book, user data and authority data and storing the address book, the user data and the authority data in the storage unit; the short message processing unit is used for setting sent objects, a priority level and sending interfaces, processing short message content and adding a result to a short message sending queue; the scheduling and sending unit reads data of the short message sending queue in a circulating mode, chooses and schedules a common short message sending interface or a multimedia message sending interface according to the size of short message data or setting of the sending interfaces and sends short messages, and if sending fails, the priority level is adjusted and the short messages enter the sending queue again until the short messages are sent successfully; the storage unit is in link connection with the data maintenance unit, the short message processing unit and the scheduling and sending unit, and stores the corresponding data. The method includes the step of data maintenance, the step of short message generation and the step of scheduling and sending. Through scheduling of the address book, scheduling of short message interfaces and a feedback technology, the system and the method achieve stability, timeliness and reliability of sending of the short messages.