Urethane acrylate (UA) was used to prepare carbon quantum dots (C‐dots) luminescent membranes and the resultants were examined with FT‐IR, mechanical strength, scanning electron microscope (SEM) and quantum yields (QYs). FT‐IR results showed the polyurethane acrylate (PUA) prepolymer –C = C‐vibration at 1101 cm−1 disappeared but there was strong vibration at1687cm−1which was contributed from the–C = O groups in cross‐linking PUA. Mechanical strength results showed that the different quantity of C‐dots loadings and UV‐curing time affect the strength. SEM observations on the cross‐sections of the membranes are uniform and have no structural defects, which prove that the C‐dots are compatible with the water‐soluble PUA resin. The C‐dot loading was increased from 0 to 1 g, the maximum tensile stress was nearly 2.67 MPa, but the tensile strain was decreased from 23.4% to 15.1% and 7.2% respectively. QYs results showed that the C‐dots in the membrane were stable after 120 h continuous irradiation. Therefore, the C‐dots photoluminescent film is the promising material for the flexible devices in the future applications.