To provide a plant facility monitor system capable of reinforcing early countermeasures by surely informing each staff who manages and operates the defective contents of the facility equipment of a plant through a mail.

When any failure is generated in the facility equipment of a plant, a mail automatic distributing device 5 distributes a mail indicating the defective contents through the Internet 8 and a telephone line 10 to a prescribed portable telephone 7, and stores the defective contents generated in a prescribed time and the occurrence time. Then, the storage data within the prescribed time are distributed through the Internet 8 and the telephone line 10 to a terminal personal computer 9.