Polymer nanocomposites are diverse and versatile functional materials in which nanoscale (1-100 nm) inorganic particles are dispersed in an organic polymer matrix to display enhanced optical, mechanical, magnetic, and optoelectronic properties. CdSe-polymer nancomposites find potential applications in the fabrication of devices like photovoltaic hybrid cell, laser, thin film transistors, light emitting diodes, and other nanoscale devices [1]. Tributylphosphine and oleic acid capped CdSe quantum dots used in the present study were prepared by injecting organometallic precursors that nucleated and grew in octadecene, which was heated up to 140 0C. The CdSe nanocrystals (NCs) were dispersed in same dissolvent along with styrene/ butyl methacrylate copolymer (SBMA), with a nanocrystals to polymer ratio of 4 % in weight. The CdSe and CdSe/SBMA were cast onto a glass substrate by spin-coating method. Optical transmission (T = f(λ)) and photoluminiscence (IPL = f(λ)) were detected in the range 300 – 800 nm with SPECORD UVVIS (Carl Zeiss Jena) and MDR-23. Photoluminescence excitation were performed N2 (λ= 337.1 nm) laser, whose power density was about P = 0.1 - 103 W/cm2, τi = 8 ns or with laser diode (λ= 405 nm). All spectra were registered at room temperature. In Fig.1a is showed the absorption coefficent as function of energy α(hν), calculated by formula α = -lnT/d. We have identified 5 major absorption bands at 2.73, 2.89, 3.17, 3.35, 3.60 eV, in the range 200-800 nm. Spectroscopy research showed that CdSe photoluminiscence maximum is shifted in the short wave length region after emebedding in SBMA, from 593 nm (Fig.1d) to 550 nm (Fig.1c).