The utility model discloses a drilling platform based on double -walled steel cofferdam, including support on the double -walled steel cofferdam lower supporting platform with support the last supporting platform on lower supporting platform, it is as an organic whole through protecting a connection structure connection that a plurality of steel protect a section of thick bamboo, protects a connection structure and include a plurality of transverse connection roof beams, every row of steel protects in the section of thick bamboo all to be connected through a transverse connection roof beam between the upper portion that two adjacent steel protected tin, supporting platform supports on protecting a connection structure down, and lower supporting platform includes the multichannel longeron,goes up supporting platform and includes multichannel transverse distribution roof beam. The utility model has the advantages that the whole structure is simple single, firm and the dismouting is simple and convenient, and it is all as an organic whole through protecting a connection structure connection that double -walled steel cofferdam and all steel that are located the double -walled steel cofferdam protect a section of thick bamboo to the combination formula supporting platform that two upper and lower supporting platform constitute supports on protecting a connection structure, protectsa connection structure and is effectively guaranteed with the stable homoenergetic that the steel protected a section of thick bamboo for direct load -carrying members, double -walled steel cofferdam.