From the sensing technology and data transmission technology, according to the offshore platform construction situation, the real-time monitoring platform for safety production for the people entering the construction area is designed, so as to realize the comprehensive management among the different monitoring subsystems, make the real-time data, running state, and alarm information acquisition in the subsystems, and take into consideration the functions of the safety production and security guard as well as. Through field tests, the monitoring platform is stable and reliable, which can effectively monitor the offshore platform production, and ensure the smooth progress of offshore platform safety production.