The utility model discloses a portable table case installing support, including two staple bolts, each staple bolt in two staple bolts includes first staple bolt piece, first staple bolt piece includes an arc -shaped hoop board, first folded plate and second folded plate, the length of second folded plate is greater than the length of first folded plate, second staple bolt piece, second staple bolt piece includes the 2nd arc -shaped hoop board, third folded plate and fourth folded plate, the length of fourth folded plate is greater than the length of third folded plate, be provided with the baffle between second folded plate and the fourth folded plate, a fixing device, fixing device is including passing the bolt in spiral hole and connect soon in the nut of bolt, the inner wall of an arc -shaped hoop board and the 2nd arc -shaped hoop board is equipped with antiskid. The utility model discloses an extension staple bolt will be shown the case and fix on the pole for table case easy dismounting, safe and reliable, elegant appearance can also fix the not table case of equidimension specification.