Malaria is Ravaging tropical countries. This disease is the third leading causes of death worldwide with two to three million victims per year Mainly in Africa. Currently, traditional medical knowledge is increasingly used beens Among urban citoyens, Who wears modern medical and pharmaceutical care. This study is an exploratory survey on the use of Alstonia congensis in the treatment of malaria. The aim of this study is to compare the efficacy of the use of medicinal plants like Alstonia congensis versus a combination of artesunate and amodiaquine (ASAQ), as it is Commonly used at the secondary hospital of Kenge, The sample of this study Was heterogeneous, it Dealt with social Several layers of interviewed: teacher, Peasants and others, people of two, age groups, etc. All subjects selected Were positive for gold RTD test of thick blood. Results show That Alstonia but effective communities is use a decoction of Alstonia skin to Avoid the side effects Observed When Taking ASAQ. A comparison of the two treatments Reveals That 16 squares Were cured in the ASAQ group (40%) versus 32 out of 40 patients (80%) in the group congensis Alstonia. We Concluded That Alstonia contains a real antimalarial activity more than ASAQ.