Master Thesis at the College of Science, University of Basra (The medical effect of Cynomoriumcoccineum and Cistanchetubulosa on the male reproductive system in laboratory animals) and the researcher presented a thesis (Narjis Kadhim madlool ). The thesis aims to know the physiological and histological changes caused by parasitic plant extracts on the male reproductive system in laboratory rats. The study included extracting glycosides and flavonoids, conducting a qualitative chemical detection, diagnosing the active compounds of plant samples, and studying their effect on the male reproductive system in both histological and physiological terms. The study recommended extensive studies on the effect of parasitic plant extracts on other body systems, the purification of active compounds, the study of their physiological and histological effects, and the study of environmental conditions that affect plant chemistry.