The invention provides modular greenhouse roof structure, which has two bottom sides of assembling frame extrude outwardly and composed of corresponding C-shape fastening groove, on top of the C-shape fastening groove that corresponding to the two side of the assembling frame composed of corresponding support section of which forms hook part at outside of the support section, one side of translucent module correspondingly assembles assembling frame body where outside of the assembling frame body corresponding to the C-shape fastening groove is provided with corresponding engaging part, where the outside of the assembling frame body corresponding the support section is provided with convex against section and at the outside of the convex against section corresponding to the hook part forms catching part. Accordingly, the modular invention makes the structure more simple, which not only provides convenience during construction, but reduces working hours and the time of being exposed to sun for constructors. Further, the invention not only has better intensity, but enhances the durability, which is practical and effective.本發明係有關於一種模組式溫室屋頂結構，其主要係令組接架兩側底端向外延伸凸設有相對應之Ｃ型扣接槽，且於組接架兩側對應Ｃ型扣接槽上方凸設有相對應之支撐段，於支撐段外端形成有勾掣部，令透光模組一側對應組接架設有組接框體，於組接框體外端對應Ｃ型扣接槽凸設有相對應扣接結合之扣接部，且於組接框體外端對應支撐段凸設有抵靠段，於抵靠段外端對應勾掣部形成有相配合之扣掣部；藉此，利用模組化設計，使得其整體結構更為簡單，不僅在施工作業過程中更為簡易便利，且相對能節省施工過程所花費之工時，連帶能減少施工人員曝曬在陽光下的時間，同時具有較佳使用強度，更能增加其使用壽命，而在其整體施行使用上更增實用功效特性者。
