A three-axis gimbal for mounting a photographing component, comprising: a roll axis component and a pitch axis component, wherein: the roll axis component includes a roll axis arm and a first electromechanical coupling apparatus arranged at one end of the roll axis arm; the pitch axis component includes a pitch axis arm and a second electromechanical coupling apparatus arranged at one end of the pitch axis arm; the first electromechanical coupling apparatus includes a first hollow motor shaft; a first accommodation cavity is arranged in the first hollow motor shaft; a roll axis arm accommodation cavity is arranged in the roll axis arm; the first accommodation cavity is connected to the roll axis arm accommodation cavity; the second electromechanical coupling apparatus includes a second hollow motor shaft; a second accommodation cavity is arranged in the second hollow motor shaft; a pitch axis arm accommodation cavity is arranged in the pitch axis arm; the second accommodation cavity is connected to the pitch axis arm accommodation cavity; the roll axis component further includes a first conductive wire in the first accommodation cavity and the roll axis arm accommodation cavity; the pitch axis component further includes a second conductive wire in the second accommodation cavity and the pitch axis arm accommodation cavity; and the first conductive wire is connected to the second conductive wire, characterized in that an installation end for mounting the photographing component is arranged at another end of the pitch axis arm that is other than the one end of the pitch axis arm at which the second electromechanical coupling apparatus is arranged, and the second conductive wire extends from the installation end. the roll axis component includes a roll axis arm and a first electromechanical coupling apparatus arranged at one end of the roll axis arm; the pitch axis component includes a pitch axis arm and a second electromechanical coupling apparatus arranged at one end of the pitch axis arm; the first electromechanical coupling apparatus includes a first hollow motor shaft; a first accommodation cavity is arranged in the first hollow motor shaft; a roll axis arm accommodation cavity is arranged in the roll axis arm; the first accommodation cavity is connected to the roll axis arm accommodation cavity; the second electromechanical coupling apparatus includes a second hollow motor shaft; a second accommodation cavity is arranged in the second hollow motor shaft; a pitch axis arm accommodation cavity is arranged in the pitch axis arm; the second accommodation cavity is connected to the pitch axis arm accommodation cavity; the roll axis component further includes a first conductive wire in the first accommodation cavity and the roll axis arm accommodation cavity; the pitch axis component further includes a second conductive wire in the second accommodation cavity and the pitch axis arm accommodation cavity; and the first conductive wire is connected to the second conductive wire, characterized in that an installation end for mounting the photographing component is arranged at another end of the pitch axis arm that is other than the one end of the pitch axis arm at which the second electromechanical coupling apparatus is arranged, and the second conductive wire extends from the installation end.