The invention discloses a recovering method for uranium and fluorine in uranium hexafluoride alkali absorption solution waste liquid. According to the recovering method, the uranium hexafluoride alkali absorption solution waste liquid is firstly acidized through acid, the pH is equal to 2.7-5.5 through adjustment, then macromolecule adsorbent (polystyrene-cyclohexyl amino maleic acid) is added to finish UO22+ adsorption, solid-liquid separation is performed, so that desorption is performed on obtained solids through acid with concentration larger than 1M to recover UO22+, Na2CO3 is added into the remaining solution to perform a next cycle of uranium hexafluoride elution, and after five or more cycles, the solution is rich in F- high in concentration. NaC1 is added into the solution, so that the solution is saturated, and NaF is precipitated due to the fact that the solubility is reduced, NaF solids are obtained through filtering and recovering, CaC12, or CaO or Ca (OH)2 solids or saturated solutions are then added into the solution, so that the residual F- forms CaF2 sediment, and fluoride removal is performed deeply. Finally, the uranium and the large amount of fluoride in the uranium hexafluoride alkali absorption solution waste liquid are recovered. Uranium in the radioactive waste liquid is recovered, zero drainage of the waste liquid is achieved, the drainage of the waste liquid reaches the national standard, and meanwhile the problem that in a traditional fluoride removal technology, a large amount of calcium fluoride is difficult to filter is solved.