. In the first method for manufacturing a semiconductor device, it is preferable that the metal layer is made of titanium. In that case, an adhesion layer with favorable adhesion made of titanium oxide can be reliably formed by sufficiently oxidizing the titanium metal layer. In the first method for manufacturing a semiconductor device, it is preferable that the thickness of the metal layer is at least 0 nm and at most 00 nm. In that case, in addition to the previously described effects, a sufficient adhesion can be maintained while forming the adhesion layer by sufficiently oxidizing the metal layer, because the thickness of the metal layer has been set to at least 0 nm and at most 00 nm. Furthermore, since the thickness of the metal layer that is turned into the adhesion layer is at least 0 nm and at most 00 nm thin, if the first method for manufacturing a semiconductor device is applied to the formation of cup-type capacitors, an increase in the aspect ratio of the cups (recesses) in which the upper electrodes are buried can be prevented. Consequently, the upper electrodes can be formed easily. In the first method for manufacturing a semiconductor device, it is preferable that the liquid having oxidizing power is water, hydrogen peroxide water or ozone water. In that case, an adhesion layer with favorable adhesion can be reliably formed by sufficiently oxidizing the metal layer.