A triaxial dome-type surveillance camera, which is a dome-type surveillance camera having a hemispherical cap configured to be attached to a wall surface or a ceiling to surround an outside of a camera module mounted therein, the triaxial dome-type surveillance camera comprising: an upper cap having a hemispherical shape, and formed at an upper center thereof with a window hole to allow the camera module to capture an image; a lower cap having a hemispherical shape, coupled to a lower portion of the upper cap to form a spherical shape, and having an axial center coupling part extending downward from a lower center of the lower cap; a base configured to be attached to the wall surface or the ceiling, and provided on a top surface thereof with an axial latching part including a plurality of axial latching ends having an inverted-L shape and arranged in a circular shape, and a wire extension hole formed through an inner central portion of the axial latching part; a triaxial rotary body including a cap seating part surrounding an outer periphery of the lower cap when the cap seating part is coupled to the axial center coupling part, and including a rotation support part extending from a lower portion of the cap seating part and having a base recess end extending in an axial center direction from a lower end of the rotation support part so as to be coupled to the axial latching end; and an external cover surrounding outsides of the lower cap and the triaxial rotary body, and coupled to an upper portion of the base, wherein the axial center coupling part includes an axial center extension end formed at a center thereof with a through-hole, and an axial center fixing end extending outward from a lower end of the axial center extension end, the cap seating part is formed at a center thereof with an axial center tilting groove having an arc shape and extending in front and rear directions to make close contact with outer peripheries of both sides of the axial center extension end and to allow the axial center fixing end to be latched thereto when the axial center tilting groove is coupled to the axial center coupling part, and wherein the base recess end of the triaxial rotary body is rotatably coupled to the axial latching part provided on the top surface of the base camera module mounted in the upper cap monoaxially rotates with the base recess end and the axial latching end serving as an axial center according to the rotation of the triaxial rotary body. an upper cap having a hemispherical shape, and formed at an upper center thereof with a window hole to allow the camera module to capture an image; a lower cap having a hemispherical shape, coupled to a lower portion of the upper cap to form a spherical shape, and having an axial center coupling part extending downward from a lower center of the lower cap; a base configured to be attached to the wall surface or the ceiling, and provided on a top surface thereof with an axial latching part including a plurality of axial latching ends having an inverted-L shape and arranged in a circular shape, and a wire extension hole formed through an inner central portion of the axial latching part; a triaxial rotary body including a cap seating part surrounding an outer periphery of the lower cap when the cap seating part is coupled to the axial center coupling part, and including a rotation support part extending from a lower portion of the cap seating part and having a base recess end extending in an axial center direction from a lower end of the rotation support part so as to be coupled to the axial latching end; and an external cover surrounding outsides of the lower cap and the triaxial rotary body, and coupled to an upper portion of the base, wherein the axial center coupling part includes an axial center extension end formed at a center thereof with a through-hole, and an axial center fixing end extending outward from a lower end of the axial center extension end, the cap seating part is formed at a center thereof with an axial center tilting groove having an arc shape and extending in front and rear directions to make close contact with outer peripheries of both sides of the axial center extension end and to allow the axial center fixing end to be latched thereto when the axial center tilting groove is coupled to the axial center coupling part, and wherein the base recess end of the triaxial rotary body is rotatably coupled to the axial latching part provided on the top surface of the base camera module mounted in the upper cap monoaxially rotates with the base recess end and the axial latching end serving as an axial center according to the rotation of the triaxial rotary body.