The present invention relates to the technical field of earphones. Disclosed are an earphone fine-adjustment structure and an earphone. The earphone fine-adjustment structure is used for adjusting an angle between a head strap and a sounding unit of a headphone, and comprises an upper assembly connected at a tail end of the head strap and a lower assembly connected at the sounding unit. The upper assembly and the lower assembly are hinged with each other. The upper assembly is provided with a limiting step. The lower assembly is movably connected to a limiting member. The limiting member is provided with multiple limiting blocks that have different thicknesses and abut against the limiting step and are used for limiting the angle of the lower assembly relative to the upper assembly. The earphone fine-adjustment structure can adjust the angle between the upper assembly and the lower assembly by selecting limiting blocks having different thicknesses, and the objective of adjusting the angle of the sounding unit relative to the head strap is achieved, and the wearing comfort of the earphone is improved.
