The utility model provides an angle-adjustable solar photovoltaic fixing support which comprises a front vertical column foundation, a back vertical column foundation, a longitudinal primary beam, a lower vertical column and an upper vertical column. The upper vertical column can be arranged along the lower vertical column in a lifting manner, the bottom of the lower vertical column and the top of the back vertical foundation are fixedly connected, one end of the longitudinal primary beam and the top of the front vertical column foundation are fixedly connected, the other end of the longitudinal primary beam and the top of the upper vertical column are fixedly connected, the longitudinal primary beam and a horizontal secondary beam are fixedly connected, and the horizontal secondary beam and a solar photovoltaic cell are fixedly connected. The angle-adjustable solar photovoltaic fixing support has the advantages that mounting is firm, mounting cost is low, adjustment is simple and convenient, the land occupation area is small, and sunlight all the year round can be fully utilized to directly irradiate so as to gain more radiant energy.