An anchoring system for formwork struts, the system comprising: - struts (p), - a male element, attachable to the head of a strut (p), the male element, comprising a seat for joining the head of a strut (p) and four pins distributed at right angles to each other, the pins having a protuberance at the end, - a female element (2, 2'), comprising a bar (21, 21') and a flat surface that consists of a plate (22, 22') joined to the bar (21, 21') wherein The seat is for joining the head of a strut (p), the seat and the pins being configured so that in use, the upper end of the bar (21, 21') is fastened to the male element and the other end joined to the lower area of the neighbouring strut (p) by means of a wedge clamp, attaching diagonally to two adjacent struts (p), wherein at the least one of the pins is perpendicular to the plane containing the longitudinal axis of the two struts (p) to be anchored between each other, said flat surface comprising a slot (23, 23') perpendicular to the longitudinal dimension of the bar (21, 21'), with a width smaller than that of the protuberance and at least one portion with a width larger than that of the pin, the slot being double and symmetrical and comprising an opening (24, 24') in the middle of the slot for the introduction of the pin in the slot (23, 23') in a position such that in use the opening (24, 24') is located in a position lower than one of the ends of the slot (23, 23'), wherein the pin is fastened in an upper area of the slot (23, 23'), the plate comprising a positioning stop intended to abut with the bar which is longitudinal with respect to the bar and consists of a section die cut and bent at 90 degree angle - struts (p), - a male element, attachable to the head of a strut (p), the male element, comprising a seat for joining the head of a strut (p) and four pins distributed at right angles to each other, the pins having a protuberance at the end, - a female element (2, 2'), comprising a bar (21, 21') and a flat surface that consists of a plate (22, 22') joined to the bar (21, 21') wherein The seat is for joining the head of a strut (p), the seat and the pins being configured so that in use, the upper end of the bar (21, 21') is fastened to the male element and the other end joined to the lower area of the neighbouring strut (p) by means of a wedge clamp, attaching diagonally to two adjacent struts (p), wherein at the least one of the pins is perpendicular to the plane containing the longitudinal axis of the two struts (p) to be anchored between each other, said flat surface comprising a slot (23, 23') perpendicular to the longitudinal dimension of the bar (21, 21'), with a width smaller than that of the protuberance and at least one portion with a width larger than that of the pin, the slot being double and symmetrical and comprising an opening (24, 24') in the middle of the slot for the introduction of the pin in the slot (23, 23') in a position such that in use the opening (24, 24') is located in a position lower than one of the ends of the slot (23, 23'), wherein the pin is fastened in an upper area of the slot (23, 23'), the plate comprising a positioning stop intended to abut with the bar which is longitudinal with respect to the bar and consists of a section die cut and bent at 90 degree angle The seat is for joining the head of a strut (p), the seat and the pins being configured so that in use, the upper end of the bar (21, 21') is fastened to the male element and the other end joined to the lower area of the neighbouring strut (p) by means of a wedge clamp, attaching diagonally to two adjacent struts (p), wherein at the least one of the pins is perpendicular to the plane containing the longitudinal axis of the two struts (p) to be anchored between each other, said flat surface comprising a slot (23, 23') perpendicular to the longitudinal dimension of the bar (21, 21'), with a width smaller than that of the protuberance and at least one portion with a width larger than that of the pin, the slot being double and symmetrical and comprising an opening (24, 24') in the middle of the slot for the introduction of the pin in the slot (23, 23') in a position such that in use the opening (24, 24') is located in a position lower than one of the ends of the slot (23, 23'), wherein the pin is fastened in an upper area of the slot (23, 23'), the plate comprising a positioning stop intended to abut with the bar which is longitudinal with respect to the bar and consists of a section die cut and bent at 90 degree angle