The paper briefly introduced internal and external situation about the wind power station construction and the newly developing plan for the wind power station construction of our country firstly; and then in detail introduced the general scheme, key techniques, new inventions and realizing methods about the developing subject of QLY2150-full circle slewing and tyre type crane for erecting wind power station which proposed based on the above situation; finally introduced the states of the prototype be used in construction of wind power station , and pointed out some great superiorities of this new crane compared with the other general tyre cranes, tuck cranes and crawler cranes.