In this paper, we discuss the effect of the hydrogen-bonding on the photoluminescent(PL) properties of 1-pyrenecarboxylic acid (PCA)/ poly(methyl methacrylate) (PMMA). Isolated fluorophore can be obtained when PCA molecules were blended and septrated by PMMA, i. e. excimer emission can be more efficiently prevented. With the use of non-solvent, toluene, in the preparation step, excimer emission of PCA can be more effeiciently prevented as compared to the good solvent, tetrahydrofuran(THF). With a high PMMA/PCA ratio of 1000/1, emission spectra show no sign of excimer formation. Intermolecular hydrogen bonding between PMMA and PCA helps to prevent the excimer formation. Solvents used in the preparative state play important role on the final PL properties of the solid film. In the blend, partial carbonyl groups in PMMA band with carboxylic acid group in PCA, this causes the appearance of a stretching band at 1718 cm-1 in infrared spectroscopy. The hydrogen-bond interactions help to the prevention of excimer formation in the PMMA/PCA blending systems.