As important equipment for offshore operations in the petroleum industry, offshore drilling platforms are facing many threats of terror and theft. The integrated protection system of drilling platforms includes C2 stations, detection subsystems, communication subsystems, and disposal subsystems. The main equipment includes radar, sonar, floating sea fence, optical fiber detection block net, police acoustic weapon, dizzy lighting device, etc. Through active detection, the threat of intrusion on/under the water surface is found, using physical isolation means and non-lethal weapons repel intruders and robbers to achieve the purpose of defending offshore drilling platforms.