Coupling system for wooden panels for the construction of removable sports flooring, said coupling system consisting of a first plastic plate (1.1) associated with a first panel and a second metal plate (1.2) associated with a second panel, said first plate (1.1) and second plate (1.1) having a substantially quadrangular shape, the first plate (1.1) consisting of a first surface (1.1.2) to which a second surface (1.1.2) is superimposed, characterized in that: the first surface ( 1.1.2) of the first plate (1.1) has a transverse through connection cavity (1.7) which is transversal to the second surface (1.1.1) said transverse through connection cavity (1.7) comprising a couple of side portions (1.7.1, 1.7.2) and a central portion (1.7.3), the internal surfaces of the lateral sections (1.7.1, 1.7.2) of the transverse through connection cavity (1.7) are orthogonal to the plane of the second surface (1.1.1), the internal surface of the central portion (1.7.3) of the transverse through connection cavity (1.7) is inclined with respect to the first surface (1.1.1), the second plate (1.2) has a first short side (1.2.2.1) equipped with a pair of through slots (1.2.7) parallel to the plane of the second plate (1.2) to create two lateral segments (1.2.3, 1.2.4) and a central segment (1.2.5), the second plate (1.2) engages the first plate (1.1) for insertion of the lateral segments (1.2.3,1.2.4) and of the central segment (1.2.5) present on the first short side (1.2.2.1) of the second plate ( 1.2) in the transverse through connection cavity (1.7) of the first plate (1.1), each lateral segment (1.2.3,1.2.4) present on the first short side (1.2.2.1) of the second plate (1.2) is inserted in the corresponding lateral section (1.7.1,1.7.2) of transverse through connection cavity (1.7) of the first plate (1.1) and the central segment (1.2.5) present on the first short side (1.2.2.1) of the second plate (1.2) fits into the corresponding central portion (1.7.3) of the transverse through connection cavity (1.7) of the first plate (1.1) thus connecting the first panel and the second panel. the first surface ( 1.1.2) of the first plate (1.1) has a transverse through connection cavity (1.7) which is transversal to the second surface (1.1.1) said transverse through connection cavity (1.7) comprising a couple of side portions (1.7.1, 1.7.2) and a central portion (1.7.3), the internal surfaces of the lateral sections (1.7.1, 1.7.2) of the transverse through connection cavity (1.7) are orthogonal to the plane of the second surface (1.1.1), the internal surface of the central portion (1.7.3) of the transverse through connection cavity (1.7) is inclined with respect to the first surface (1.1.1), the second plate (1.2) has a first short side (1.2.2.1) equipped with a pair of through slots (1.2.7) parallel to the plane of the second plate (1.2) to create two lateral segments (1.2.3, 1.2.4) and a central segment (1.2.5), the second plate (1.2) engages the first plate (1.1) for insertion of the lateral segments (1.2.3,1.2.4) and of the central segment (1.2.5) present on the first short side (1.2.2.1) of the second plate ( 1.2) in the transverse through connection cavity (1.7) of the first plate (1.1), each lateral segment (1.2.3,1.2.4) present on the first short side (1.2.2.1) of the second plate (1.2) is inserted in the corresponding lateral section (1.7.1,1.7.2) of transverse through connection cavity (1.7) of the first plate (1.1) and the central segment (1.2.5) present on the first short side (1.2.2.1) of the second plate (1.2) fits into the corresponding central portion (1.7.3) of the transverse through connection cavity (1.7) of the first plate (1.1) thus connecting the first panel and the second panel. each lateral segment (1.2.3,1.2.4) present on the first short side (1.2.2.1) of the second plate (1.2) is inserted in the corresponding lateral section (1.7.1,1.7.2) of transverse through connection cavity (1.7) of the first plate (1.1) and the central segment (1.2.5) present on the first short side (1.2.2.1) of the second plate (1.2) fits into the corresponding central portion (1.7.3) of the transverse through connection cavity (1.7) of the first plate (1.1) thus connecting the first panel and the second panel.