The disclosure provides a thermal bending-free photocuring curved screen protective paster which comprises a first protective film, an OCA glue layer, a main functional layer, a PET film layer, a surface functional layer and a second protective film sequentially arranged from bottom to top. The protective paster of the disclosure can be well attached to a curved screen and the like, and avoids the phenomena of warping, forming failure, springback and the like occurring after the traditional protective film is attached. The protective paster of the disclosure has good wear resistance, good anti-scraping effect, good transparency, good temperature resistance and stable structure, which can be prepared into a film with any angle, can be firmly attached to a curved screen with a large radian, and can effectively protect the curved screen.