The invention discloses a single-chip LED photoelectric coupler comprising a silicon photodetector, a first dielectric layer and an LED light source which are axially arranged on a first substrate from bottom to top and manufactured by the integrated circuit process. The invention also discloses a manufacturing method of the single-chip LED photoelectric coupler. The invention further discloses anintegrated circuit of the single-chip LED photoelectric coupler and the manufacturing method thereof. The light source detector and the LED light source are manufactured on the same substrate. Compared with the traditional photoelectric coupler with planar structure or the photoelectric coupler with axial structure of which the light source and the photoelectric detector need to be electrically welded when using the glue dispensing process, the device integration is high, the packaging size is reduced and the manufacturing difficulty and cost are reduced. The single-chip LED photoelectric coupler can be integrated on the same substrate with the circuit so that the manufacturing cost can be further reduced, the integration of the circuit can be improved and the single-chip LED photoelectric coupler is suitable for the technical field of the photoelectric coupler integration.