Periphery protecting net stress sensing rack

The utility model discloses a stress sensing rack for peripheral protective nets, which comprises a protective net supporting upright post and a base, wherein an upper opening part of the base forms a supporting plane of the circumferential sides of the supporting upright post, a multi-direction tension spring or a single base spring is fixed in the base, and the bottom of the supporting upright post is movably suspended in the base through connecting with the multi-direction tension spring or inserting into the single base spring. A switching device which can produce electrical signal and is sensitive to the movement of the supporting upright post is installed at the bottom of the supporting upright post, and connected in series into an alarm power circuit as a working power switch. The utility model has the advantages of low false alarm rate, long service life, energy saving, environmental protection, convenient maintenance, etc.