Prefabricated panel formwork, suitable for being used in the construction of buildings and gardens. Pre-fabricated panel formwork provided with a pair of vertical metal sections to which a back metal wall and a front metal wall are fixed, being suitable to define an intermediate cavity that is open on top and on the bottom； wherein at least said front metal wall is provided with a plurality of horizontal slots, each of them being positioned at the top of an underneath pocket that protrudes frontally from the same wall.
