In this paper, we define the new notion of quasi-prime ideal which generalizesat once both prime ideal and primary ideal notions. Then a naturaltopology on the set of quasi-prime ideals of a ring is introduced which admits the Zariski topology as a subspace topology. The basicproperties of the quasi-prime spectrum are studied and several interesting results are obtained. Specially, it is proved that ifthe Grothendieck t-functor is applied on the quasi-prime spectrumthen the prime spectrum is deduced. It is also shown that there arethe cases that the prime spectrum and quasi-prime spectrum do notbehave similarly. In particular, natural topological spaces withoutclosed points are obtained. پرونده مقاله