The invention discloses a safety monitoring real-time sharing monitoring system for a construction period. A structure of the system comprises a cloud sharing platform, a mobile communication networkand a safety monitoring data sharing system which is composed of various safety monitoring instrument collection modes and is applicable to operation in the construction period. The various collectionmodes comprise a wireless local area network mode, a wired transmission observation station mode, a storehouse surface or side slope wireless collection mode and a built-in wireless communication portable collector mode. According to the system, through joint action of the various collection modes, automatic monitoring demands of an open area and a hidden area are taken into consideration; underthe condition of sufficiently mitigating system installation complexity, practical situations of a construction field are taken into consideration; a portable collection mode is reserved; and the irreplaceability of manual collection is ensured in system abnormal areas and under few situations.