To provide a manufacturing method of an organic EL element in which the organic EL element of high light-emitting efficiency can be manufactured stably by a wet process.

In the manufacturing method of the organic electroluminescent element having at least an anode, a cathode, and a plurality of organic layers including a light-emitting layer between the anode and the cathode on a substrate, at least one layer of the organic layers is a mixed layer composed of a plurality of materials, in which a host material solution and a guest material solution prepared as separate solutions are simultaneously coated, and afterwards in which they are mixed on the substrate to form the film.