The invention discloses an adjustable and controllable dye laser based on light fluid. The adjustable and controllable dye laser comprises a pumping light source, a work medium and a resonant cavity, wherein a circular conical surface external reflector and the resonant cavity are sequentially arranged in an optical axis direction of an emergent light beam of the pumping light source, the resonant cavity is a transparent column body, in addition, a first optical reflector, a dye molecule suspension liquid region, a first liquid lens, a second liquid lens, a gas cavity and a second optical reflector are sequentially arranged in a cavity body of the resonant cavity in the optical axis direction, the dye molecule suspension liquid region is used as a work medium, a first electrode and a second electrode used for regulating and controlling the first liquid lens and the second liquid lens are arranged on the outer surface of the resonant cavity, and a first circular conical surface internal reflector and a second circular conical surface internal reflector are also arranged in a way of using an optical axis as a center symmetric axis. The adjustable and controllable dye laser based on light fluid has the advantages that the output laser mode is controllable, the light beam quality is good, the flexibility is high, and the like.