In this study, the effect of some Turkish propolis on the product quantity of cultivated mushroom Agaricus bisporus (Lange.) Sing. was determined. The samples of propolis were obtained from (Bursa and Erzurum) regions of Turkey. Propolis extracts were prepared as 0.5 EEP and 2.0 EEP and sprayed on compost, compost + casing soil and compost + casing soil + 1. flush of Agaricus bisporus at different times of growth period under controlled laboratory conditions Propolis showed stimulatory effects on the developmental stages and some parameters of the yield. An early yield of mush-rooms, rapid growing and increase of total weight of harvested basidiocarps were observed as compared to control without propolis in which primordium and basidiocarp formations showed great reduction. Chemical analysis of all the harvested mushroom that were cultivated on the product conditions with propolis were made by gas chromotography (GC)-mass spectrometry (MS).