Safe rotation structure of tower crane

The utility model provides a safe rotation structure of a tower crane. The structure comprises at least one pedestal extending outwards from the side edge of a connecting table, wherein the pedestal comprises a main plate body connected with the connecting table, an extension plate body extending to a first extension arm part and a second extension arm part from the main plate body and connected with the first extension arm part and the second extension arm part, and guardrails arranged along with outer side edges of the main plate body and the extension plate body; the main plate body and the guardrails form a path space together; and the extension plate body and the guardrails can form a first connecting channel and a second connecting channel which are connected with the first extension arm part and the second extension arm part and communicated with the path space. Compared with the prior art, the safe rotation structure has the benefits that the construction efficiency can be improved and the operation d