The invention discloses a WMT solar cell module. The WMT solar cell module is formed by upper layer glass, a first hot melt adhesive film layer, a MWT solar cell string, a conductive adhesive layer, a second hot melt adhesive film layer, a conductive foil layer and lower layer glass in a sealing mode, wherein the upper layer glass, the first hot melt adhesive film layer, the MWT solar cell string, the conductive adhesive layer, the second hot melt adhesive film layer, the conductive foil layer and the lower layer glass are sequentially stacked. The pattern of the conductive foil layer is matched with the pattern of the electrode at the back side of the MWT solar cell string. A hole is formed in the position, corresponding to the conductive foil layer, of the second hot melt adhesive film layer, and the conductive foil layer is enabled to be capable of being contacted with the electrode at the back side of the MWT solar cell string. The conductive adhesive layer is arranged between the conductive foil layer and the electrode at the back side of the MWT solar cell string. The invention further discloses a preparation method of the MWT solar cell module. A two-layer-glass structure is adopted, and the glass has good functions of being moisture-resisting, ageing-resisting, ultraviolet-resisting, and not prone to be ageing. Compared with a rear panel of conventional molecular materials, the WMT solar cell module is very good in weather resistance, and therefore the service life of the module can be prolonged.