[en] Nuclear process plays a vital role in the evolution of universe after Big Bang. At astrophysical scenario the energy released from nuclear reaction prevents the star from gravitational collapse. In this work, a crucial reaction ¹⁹F(p, α)¹⁶O which is a reaction in fourth branch of CNO cycle and the distinction between experimental data and theoretical models has been studied. Since the reaction has a controversy whether it is a direct process or compound nucleus process, H. Herndl observed that direct part is also important using the Wirzba data. The Indirect Trojan horse method can be important to study this reaction at Gamow region (27-94 KeV)