Optical communication device and assembling method thereof

The invention provides an optical communication device and an assembling method thereof, the device comprises a first component, a second component, a third component and an optical fiber adapter, an optical signal emitted by the first component passes through a hollow part of the second component and a hollow part of the third component to be converged to the optical fiber adapter, the first component is fixedly connected with the second component, and the third component is fixedly connected with the optical fiber adapter. The second component is fixedly connected with the third component, the contact surface of the second component and the third component is a spherical cambered surface, the rotation angle of the third component relative to the second component is matched with the deviation angle of the optical signal emitted by the first component, and the third component is fixedly connected with the optical fiber adapter. The second component and the third component are provided with mutually matched sp