Foeniculum Vulgare Mill (family Apiaceae) is a strong aromatic and medicinal plant. It used for various proposes i.e., in food, cosmetic and medicinal industries. Therefore,field experiment was conducted during 2016/2017 and 2017/2018 seasons in private Farm at Maghnin village, Koum Hamada city, Elbehera Governorate, Egypt, to study the response of fennel plant to NPK doses and some biostumulants. The experiment was setup as a split plot design, whereas NPK doses ( 25, 50, 75, 100% from suggested dose which was 150, 150 and 50 kg/fed of ammonium sulphate, calcium superphosphate and potassium sulphate, respectively) were as main plots, and biostumulants treatments (ascorbic, salicylic and tryptophan acids )were arranged as sub plots. The obtained results indicated that 100% NPK dose gave significant increases in vegetative growth and flowering traits weight of 100 fruits, essential oil %,  yield/pant and chemical composition parameters under study (N,P,K and carbohydrate % ) while 75% NPK dose achieved a significant higher fruit yield/plant. Application of 100 mg/l of each ascorbic, salicylic and tryptophan acids together was the most effective treatment in increasing the values of vegetative growth and flowering traits, yield of seeds, essential oil production and chemical composition parameters in comparison to the other treatments of such acids. While the interaction treatment of 100% NPK dose combined with 100 mg/l of each used acids together recorded higher significant values of such parameters mentioned before in two seasons.