A method for manufacturing an organic EL light-emitting device, comprising: a step of coating a gel agent onto one side of a sealing substrate; a step of applying an adhesive or an inorganic frit agent such as glass paste, used for the formation of a sealing portion, along the outer peripheral edge of the surface of the sealing substrate onto which the gel agent is coated; a step of making a surface of an element formation substrate, on which an organic EL element, previously including an organic light-emitting layer, is stacked, face the surface of the sealing substrate onto which the gel agent is coated; a step of discharging an inert gas in a space between the sealing substrate and the element formation substrate, which are in a state of being placed in a laminating device to face each other; a step of, in the state that the inert gas in the space between the sealing substrate and the element formation substrate is discharged, making the sealing substrate and the element formation substrate approach to each other to adhere the surface, onto which the gel agent is coated, onto the side of the organic EL element; and a step of, in the adhesive state, hardening an adhesive used for the formation of the sealing portion, or a step of, in the adhesive state, heating and fusing, with laser radiation, the inorganic frit agent such as glass paste used for the formation of the sealing portion to form the sealing portion, and wherein the gel layer contains, as an additive, a moisture absorbent or a heat-transfer agent, or the moisture absorbent and the heat-transfer agent wherein the gel layer contains an oligomer or a polymer containing, as the organosiloxane, -(R 1 R 1 SiO) l -(R 1 R 2 SiO) m -(R 1 R 3 SiO) n - wherein R 1 represents a methyl group, R 2 represents a vinyl group or a phenyl group, R 3 represents a fluoroalkyl group of -CH 2 CH 2 CF 3, and l, m, and n represent integer numbers, or a fluorinated polyether -CF 2 CFYO-: Y represents F or CF 3 in the skeleton. a step of coating a gel agent onto one side of a sealing substrate; a step of applying an adhesive or an inorganic frit agent such as glass paste, used for the formation of a sealing portion, along the outer peripheral edge of the surface of the sealing substrate onto which the gel agent is coated; a step of making a surface of an element formation substrate, on which an organic EL element, previously including an organic light-emitting layer, is stacked, face the surface of the sealing substrate onto which the gel agent is coated; a step of discharging an inert gas in a space between the sealing substrate and the element formation substrate, which are in a state of being placed in a laminating device to face each other; a step of, in the state that the inert gas in the space between the sealing substrate and the element formation substrate is discharged, making the sealing substrate and the element formation substrate approach to each other to adhere the surface, onto which the gel agent is coated, onto the side of the organic EL element; and a step of, in the adhesive state, hardening an adhesive used for the formation of the sealing portion, or a step of, in the adhesive state, heating and fusing, with laser radiation, the inorganic frit agent such as glass paste used for the formation of the sealing portion to form the sealing portion, and wherein the gel layer contains, as an additive, a moisture absorbent or a heat-transfer agent, or the moisture absorbent and the heat-transfer agent wherein the gel layer contains an oligomer or a polymer containing, as the organosiloxane, -(R 1 R 1 SiO) l -(R 1 R 2 SiO) m -(R 1 R 3 SiO) n - wherein R 1 represents a methyl group, R 2 represents a vinyl group or a phenyl group, R 3 represents a fluoroalkyl group of -CH 2 CH 2 CF 3, and l, m, and n represent integer numbers, or a fluorinated polyether -CF 2 CFYO-: Y represents F or CF 3 in the skeleton.