Wind turbine blade comprising: - an aerodynamic portion, - a root, - an internal structure interior to the blade, and - joining means for joining the blade to the hub of a turbine designed to remain embedded between lamination sheets (2, 3, 18, 19) which form part of the blade, comprising: a plurality of inserts (4.1, 4.2, 4.3), wherein each one of said inserts (4.1, 4.2, 4.3) comprise at least one elongated body (5.1, 5.2, 5.3) which is provided with at least one longitudinal bore (6.1, 6.2, 6.3) which is designed to receive a fixing element related to the hub, which facilitate the coupling between the blade and the wind turbine hub, as well as being provided with a gripping sector (8.1, 8.2, 8.3), characterized in that the wind turbine blade further comprises fibre bands of compact, elongated and enveloping configuration which grip the inserts (4.1, 4.2, 4.3) by the gripping sector (8.1, 8.2, 8.3), configuring assemblies each one of them formed by the insert (4.1, 4.2, 4.3) and fibre band which are embedded between lamination sheets (2, 3, 18, 19), wherein the fibre bands comprise an upper section, an intermediate section and a lower section, wherein the lower and upper sections start from a rear side of the fibre band until the opposite or front side wherein the joining section is found, which constitutes the section of the fibre bands which grips the gripping sector (8.1, 8.2, 8.3) of the insert (4.1, 4.2, 4.3), the fibre bands additionally grip, between the upper section and the lower section, at least one of the lamination sheets (2, 19). - an aerodynamic portion, - a root, - an internal structure interior to the blade, and - joining means for joining the blade to the hub of a turbine designed to remain embedded between lamination sheets (2, 3, 18, 19) which form part of the blade, comprising: a plurality of inserts (4.1, 4.2, 4.3), wherein each one of said inserts (4.1, 4.2, 4.3) comprise at least one elongated body (5.1, 5.2, 5.3) which is provided with at least one longitudinal bore (6.1, 6.2, 6.3) which is designed to receive a fixing element related to the hub, which facilitate the coupling between the blade and the wind turbine hub, as well as being provided with a gripping sector (8.1, 8.2, 8.3), characterized in that the wind turbine blade further comprises fibre bands of compact, elongated and enveloping configuration which grip the inserts (4.1, 4.2, 4.3) by the gripping sector (8.1, 8.2, 8.3), configuring assemblies each one of them formed by the insert (4.1, 4.2, 4.3) and fibre band which are embedded between lamination sheets (2, 3, 18, 19), wherein the fibre bands comprise an upper section, an intermediate section and a lower section, wherein the lower and upper sections start from a rear side of the fibre band until the opposite or front side wherein the joining section is found, which constitutes the section of the fibre bands which grips the gripping sector (8.1, 8.2, 8.3) of the insert (4.1, 4.2, 4.3), the fibre bands additionally grip, between the upper section and the lower section, at least one of the lamination sheets (2, 19). a plurality of inserts (4.1, 4.2, 4.3), wherein each one of said inserts (4.1, 4.2, 4.3) comprise at least one elongated body (5.1, 5.2, 5.3) which is provided with at least one longitudinal bore (6.1, 6.2, 6.3) which is designed to receive a fixing element related to the hub, which facilitate the coupling between the blade and the wind turbine hub, as well as being provided with a gripping sector (8.1, 8.2, 8.3), characterized in that the wind turbine blade further comprises fibre bands of compact, elongated and enveloping configuration which grip the inserts (4.1, 4.2, 4.3) by the gripping sector (8.1, 8.2, 8.3), configuring assemblies each one of them formed by the insert (4.1, 4.2, 4.3) and fibre band which are embedded between lamination sheets (2, 3, 18, 19), wherein the fibre bands comprise an upper section, an intermediate section and a lower section, wherein the lower and upper sections start from a rear side of the fibre band until the opposite or front side wherein the joining section is found, which constitutes the section of the fibre bands which grips the gripping sector (8.1, 8.2, 8.3) of the insert (4.1, 4.2, 4.3),