To provide a guard system which reduces expenses and accurately monitors and records a safe to surely prevent theft.

The guard system is provided with a store controller 2 which has a detection means 7, 8, 9, 12, and 13 which detect abnormality in a store to be guarded, a storage means where contact destinations of plural managers managing the store are stored, a report means which successively reports abnormality in the store through a telephone line by an abnormality signal detected by detection means till the success in contact with one of plural managers stored in the storage means, alarm sounding means 15 and 16 which sound an alarm against a trespasser to the store, an alarm operation means which operates a alarm sounding means installed in the store through the telephone line by the manager who receives the report.