To provide a manufacturing method of an electrooptical device in which manufacturing efficiency is improved by improving forming efficiency of a top and bottom conductive member.

In the manufacturing method of the electrooptical device that is provided with a pair of substrates which are opposed to each other and hold electrooptical material between them, a first electrode which is provided on one of the substrates and on the side facing the material, a second electrode which is provided on the other substrate and on the side facing the material and the top and bottom conductive member which electrically connects the first and the second electrodes, the manufacturing method includes a process in which top and bottom conductive material forming ink is selectively discharged from an discharging nozzle of an ink jet head toward one or the other substrate of the pair of substrates to form the material.