The utility model relates to an erecting mechanism of a greenhouse pressure bar, which is suitable for erecting a pressure bar on a vertical frame bar, comprising a first clamp piece and a second clamp piece which are coaxially sleeved on the frame bar, and a locking assembly for locking the first clamp piece and the second clamp piece on the frame bar.And the first clamping piece and the second clamping piece of the coaxial sleeve are matched to define a dovetail shaped groove extending left and right for the left and right extension of the pressing strip to be embedded and positioned.By means of the structural design of the first clamp, the second clamp and the locking assembly, the strip can be erected on the pole only by using ordinary tools.一種溫室壓條之架設機構,適用於將一壓條架設定位於相垂直的架桿上,包含同軸套設於架桿的一第一夾接件與一第二夾接件,及一用以將第一夾接件與第二夾接件鎖固於架桿的鎖接組件。且同軸套接之該第一夾接件與該第二夾接件會相配合界定出一個左右延伸而可供該壓條左右延伸嵌置定位的鳩尾形槽道。透過該第一夾接件、該第二夾接件與該鎖接組件之結構設計,僅需使用一般的工具就可以該將該壓條架設於該架桿。