The present disclosure discloses a fixed connection of an operating space frame of a machine, comprising: a machine frame; an operating space frame mounted on the machine frame and having a plurality of posts, wherein a first connecting plate is fixedly connected respectively at a lower portion of at least two adjacent posts, the first mounting plate is fixedly connected to the machine frame via a connecting member, and a stopper is provided between the first mounting plate and the machine frame. The fixed connection improves the connection strength between the operating space frame and the machine so as to suppress deformation of the operating space frame subjected to an impact of an external force and thus provide protection for the operator and equipments therein. The present disclosure further relates to a machine having the above fixed connection.