A coupling structure of optical components is provided in the invention and has a first optical component, a second optical component and a coupling solder layer. The first optical component has a lensed fiber, a first holder holding the lensed fiber and a first metal layer formed on a first connecting end face of the first holder. The second optical component has a waveguide, a second holder holding the waveguide and a second metal layer formed on a second connecting end face of the second holder. The coupling solder layer is in direct contact with both of the first metal layer and the secondmetal layer, and formed with solder.