The invention provides a photovoltaic ecological greenhouse and a supporting frame thereof. According to the photovoltaic ecological greenhouse, the number of photovoltaic modules can be conveniently adjusted according to irradiation needed by plants with different types or at different growth stages. The supporting frame comprises stand columns and a frame connected to the upper ends of the stand columns, and the frame comprises multiple transverse guide rails which are arranged in the longitudinal direction at equal intervals and extend in the transverse direction respectively and multiple longitudinal guide rails which are arranged in the transverse direction at equal intervals and extend in the longitudinal direction respectively; the transverse guide rails and the longitudinal guide rails are mutually crossed to form multiple rectangular frame units which are arranged in an array mode, part of the frame units are used as module arranging positions for installing photovoltaic module units, and other frame units are used as conveying units for composing a conveying channel of the photovoltaic module units; a transmission mechanism used for mechanical connection and/or power transmission of the photovoltaic module units is arranged on module arranging units, and a connecting mechanism for arranging the conveying channel is arranged on the conveying units.