12 cathodic protection projects for steel pilings of TianJin Harbor were successively finished in 16 years from 1990 to 2006, include 9＃～13＃jetty, 9# and 10# jetty of NanJiang、1＃～4＃jetty of NanJiang、13#~14# coal dock of ShenHua Group Company ,ect. The total production value amounted to 47 million (RMB). In the cathodic protection for steel pilings of 13#~14# coal dock of ShenHua Group Company, GPRS remote monitoring system was applied, and service in good condition