A method for producing a multilayer member having a first member (10, 12) containing a crystallizable thermoplastic resin, an adhesion layer, and a second member in this order, the method comprising: a surface treatment step of performing a dry treatment on a surface of the first member (10a, 12a) containing a crystallizable thermoplastic resin to satisfy conditions A and B, wherein the dry treatment is at least one selected from the group consisting of a corona treatment, a plasma treatment, a flame treatment, ITRO treatment, an UV treatment, and an excimer treatment; an adhesive application step of applying an adhesive to the surface of the first member (10a, 12a) subjected to the dry treatment without a primer composition, the first member (10, 12) being subjected to only the dry treatment as a surface treatment, to form an adhesive layer on the surface; and an adhering step of adhering the second member to the adhesive layer, (Condition A) an ultimate temperature of the first member (10, 12) is lower than a peak temperature of endothermic peak obtained by differential scanning calorimetry of the crystallizable thermoplastic resin contained in the first member (10, 12); and (Condition B) a high temperature holding time of the first member is less than 3.0 seconds, wherein a high temperature holding time of the first member (10, 12) is a time when the first member (10, 12) is continuously held at a temperature not lower than a temperature at a starting point of the endothermic peak obtained by differential scanning calorimetry of the crystallizable thermoplastic resin contained in the first member (10, 12), wherein the differential scanning calorimetry of the crystallizable thermoplastic resin is performed in accordance with JIS K7121. a surface treatment step of performing a dry treatment on a surface of the first member (10a, 12a) containing a crystallizable thermoplastic resin to satisfy conditions A and B, wherein the dry treatment is at least one selected from the group consisting of a corona treatment, a plasma treatment, a flame treatment, ITRO treatment, an UV treatment, and an excimer treatment; an adhesive application step of applying an adhesive to the surface of the first member (10a, 12a) subjected to the dry treatment without a primer composition, the first member (10, 12) being subjected to only the dry treatment as a surface treatment, to form an adhesive layer on the surface; and an adhering step of adhering the second member to the adhesive layer, (Condition A) an ultimate temperature of the first member (10, 12) is lower than a peak temperature of endothermic peak obtained by differential scanning calorimetry of the crystallizable thermoplastic resin contained in the first member (10, 12); and (Condition B) a high temperature holding time of the first member is less than 3.0 seconds, wherein a high temperature holding time of the first member (10, 12) is a time when the first member (10, 12) is continuously held at a temperature not lower than a temperature at a starting point of the endothermic peak obtained by differential scanning calorimetry of the crystallizable thermoplastic resin contained in the first member (10, 12), wherein the differential scanning calorimetry of the crystallizable thermoplastic resin is performed in accordance with JIS K7121.