A method for producing an organic thin film-laminated plate, the method comprising: process: a process of hydrolyzing and/or condensing at least one kind of organic metal compound expressed by Formula in (i) an alcohol having an alkyl group having 1 to 4 carbon atoms, or (ii) a mixed solvent containing the alcohol having an alkyl group having 1 to 4 carbon atoms, in the presence of water with a concentration of 0.5% to 5% by mass in the resultant reaction solution and an acid, or a process of hydrolyzing and/or condensing the organic metal compound in a solvent that contains at least one kind selected from an aliphatic ether-based solvent and an aliphatic ketone-based solvent and does not contain the alcohol having an alkyl group having 1 to 4 carbon atoms in the presence of water of 0.1 to 20 moles with respect to 1 mole of the organic metal compound expressed by Formula and an acid, R 1 n MX m-n, wherein in the formula, R 1 represents CH 3 (CH 2) 9 -, CH 3 (CH 2) 10 -, CH 3 (CH 2) 11 -, CH 3 (CH 2) 12 -, CH 3 (CH 2) 13 -, CH 3 (CH 2) 14 -, CH 3 (CH 2) 15 -, CH 3 (CH 2) 16 -, CH 3 (CH 2) 17 -, CH 3 (CH 2) 18 -, CH 3 (CH 2) 19 -, CH 3 (CH 2) 20 -, CH 3 (CH 2) 21 -, CH 3 (CH 2) 22 -, CH 3 (CH 2) 23 -, CH 3 (CH 2) 24 -, CH 3 (CH 2) 25 -, CF 3 (CH 2) 2 -, CF 3 (CF 2) 3 (CH 2) 2 -, CF 3 (CF 2) 5 (CH 2) 2 - or CF 3 (CF 2) 7 (CH 2) 2 -, M represents at least one kind of metal atom selected from the group consisting of Si, Ge, Sn, Ti, and Zr, X represents a hydroxyl group or a hydrolysable group, n represents any integer of 1 to (m-1), m represents an atomic valence of M, in a case where n is 2 or more, R 1 is the same or different in each case, and in a case where (m-n) is 2 or more, X is the same or different in each case; process: a process of separating a solid content precipitated from the reaction solution of the process or an oily material separated from the reaction solution, or concentrating and drying the reaction solution of the process to obtain the solid content or oily material; process: a process of mixing the solid material or oily material obtained in the process with at least one kind of solvent selected from the group consisting of a hydrocarbon-based solvent, a fluorine-based solvent, and a silicon-based solvent, and removing insoluble matter as necessary to obtain an organic thin film-forming solution; and process: a process of bringing a substrate into contact with the organic thin film-forming solution that is obtained in the process to produce a substrate on which an organic thin film is laminated. process: a process of hydrolyzing and/or condensing at least one kind of organic metal compound expressed by Formula in (i) an alcohol having an alkyl group having 1 to 4 carbon atoms, or (ii) a mixed solvent containing the alcohol having an alkyl group having 1 to 4 carbon atoms, in the presence of water with a concentration of 0.5% to 5% by mass in the resultant reaction solution and an acid, or a process of hydrolyzing and/or condensing the organic metal compound in a solvent that contains at least one kind selected from an aliphatic ether-based solvent and an aliphatic ketone-based solvent and does not contain the alcohol having an alkyl group having 1 to 4 carbon atoms in the presence of water of 0.1 to 20 moles with respect to 1 mole of the organic metal compound expressed by Formula and an acid, R 1 n MX m-n, wherein in the formula, R 1 represents CH 3 (CH 2) 9 -, CH 3 (CH 2) 10 -, CH 3 (CH 2) 11 -, CH 3 (CH 2) 12 -, CH 3 (CH 2) 13 -, CH 3 (CH 2) 14 -, CH 3 (CH 2) 15 -, CH 3 (CH 2) 16 -, CH 3 (CH 2) 17 -, CH 3 (CH 2) 18 -, CH 3 (CH 2) 19 -, CH 3 (CH 2) 20 -, CH 3 (CH 2) 21 -, CH 3 (CH 2) 22 -, CH 3 (CH 2) 23 -, CH 3 (CH 2) 24 -, CH 3 (CH 2) 25 -, CF 3 (CH 2) 2 -, CF 3 (CF 2) 3 (CH 2) 2 -, CF 3 (CF 2) 5 (CH 2) 2 - or CF 3 (CF 2) 7 (CH 2) 2 -, M represents at least one kind of metal atom selected from the group consisting of Si, Ge, Sn, Ti, and Zr, X represents a hydroxyl group or a hydrolysable group, n represents any integer of 1 to (m-1), m represents an atomic valence of M, in a case where n is 2 or more, R 1 is the same or different in each case, and in a case where (m-n) is 2 or more, X is the same or different in each case; (i) an alcohol having an alkyl group having 1 to 4 carbon atoms, or (ii) a mixed solvent containing the alcohol having an alkyl group having 1 to 4 carbon atoms, process: a process of separating a solid content precipitated from the reaction solution of the process or an oily material separated from the reaction solution, or concentrating and drying the reaction solution of the process to obtain the solid content or oily material; process: a process of mixing the solid material or oily material obtained in the process with at least one kind of solvent selected from the group consisting of a hydrocarbon-based solvent, a fluorine-based solvent, and a silicon-based solvent, and removing insoluble matter as necessary to obtain an organic thin film-forming solution; and process: a process of bringing a substrate into contact with the organic thin film-forming solution that is obtained in the process to produce a substrate on which an organic thin film is laminated.