The invention discloses a method for preparing red hybridized pigment from red attapulgite clay. The method comprises the following steps of: mixing pretreated red attapulgite clay ore with solid ferric salt, uniformly grinding, dispersing in water, adding an additive, stirring to disperse uniformly, performing ultrasonic treatment, further transferring into a hydrothermal reaction kettle for hydrothermal reaction, cooling to the room temperature, separating a solid product, washing, drying and crushing, thereby obtaining the red hybridized pigment. According to the method, the novel red hybridized pigment which takes silicon as a framework and is bright in color, good in stability and uniform in granularity can be prepared by virtue of the red of natural attapulgite clay self and crystal transfer of the ferric salt in the hydrothermal process, high-value utilization of the red ttapulgite clay resource is achieved, and red pigment with higher cost performance can be provided for multiple fields of pigment, paint, ceramic, restoration of cultural relics, coatings and the like.