The invention relates to a super-large-scale multi-functional pressing machine frame installing method. The installing method includes: (1) a machine frame is placed on a support horizontally and assembled integrally; (2) a hoisting device is assembled; (3) a jack is used for jacking the machine frame, load on one side of the machine frame is transferred to a lifting device, load on the other side of the machine frame is transferred to a turnover sliding beam, and a crawl device is arranged on the turnover sliding beam; (4) lifting operation is started, simultaneously the crawl device jacks the turnover sliding beam to follow up till the 660 MN multi-functional pressing machine frame is released from the turnover sliding beam below the machine frame; (5) a transverse sliding track is replaced, two ends of a supporting beam are hinged to a rotary connecting device respectively, and a crawl device is arranged on a sliding frame; and (6) lifting operation is conducted, the machine frame is installed to a foundation pit vertically to finish installing. By means of the super-large-scale multi-functional pressing machine frame installing method, covered place is small, used material quantity is small, a large-scale hoisting device is not required, a process is reliable in control, installing cost is low, a turnover machine is good in generality, installing time of an integral machine frame is short, and efficiency is high.