Contribution to study on agricultural products' marketing (cassava and maize) in Widjifake-Mbandaka (Equator) Zaire. During the year 1988, enquiries have been made near the farming population of Widjifake village with a view to get some informations about the marketing and the rentability of cassava and maize they cultivate. From those enquiries, we saw that the pure benefit for both of the two cultures is weak. The received takings by countrymen do not seem to give satisfaction. The commercialized agricultural produce is complex, because it is bound to the damaged road, to the means of transport, at the request, and so forth.