The marketing of vegetables makes it possible to distribute the incomes between all the actors intervening in the chains and constitutes a means of fighting against poverty and the food insecurity in urban area. This article aims to indicate the profitability and the constraints of the cabbage marketing in Lubumbashi. To arrive there, 30 sellers of cabbages were surveyed at the markets Radem, Rwashi and Congo. The studied parameters relate to the socio demography, the costs of acquisition of cabbages, the selling prices, the incomes, tax and the encountered difficulties. The results showed that there are more saleswomen with 93,3% and 86,7% respectively of cabbages of China and headed cabbages having experience more than five years. The total costs of marketing's relate to the acquisition of cabbages, transport and daily tax. For a quantity of 10 kg sold a day on retail, the incomes generated by cabbages of China and headed cabbages are of order of 3, 8 and 6, 8$ and the related benefits are 1, 2 and 2, 5$.It is the headed cabbage which proves to be more profitable but for the two types just like of other market garden produces, it is the absence of the means of transport, modern conservation and the structuring of the markets which constitute difficulties of their marketing in Lubumbashi. However the marketing of the market-gardening products comprises significant stakes related to the development of urban agriculture and the orientations of the truck farming channels.

The objective of this work was to carry out a financial profitability analysis of truck farmings especially those of cabbages of China and headed cabbages in Lubumbashi in order to encourage the truck farmers to invest in these cultivations. The studied parameters relate to the socio demography, the production costs, the surface, the output, selling the prices, the incomes and the profit margins. The results showed that there are 86, 7% women in the production of cabbage of China and 53% men for headed cabbage. The main production cost of cabbage returns to the agricultural inputs, respectively 78% and 84,5% for cabbage of China and headed cabbage. The occasional paid labour presents 22% and 15,5% successively for cabbage of China and headed cabbage. On a surface of 15m2, the headed cabbage generates a benefit of 23,1±2,4 $ whereas the cabbage of China gives 13,6±1,7 $ of it. Each dollar invested for cabbage of China and headed cabbage brings back respectively 2,3 and 2,7$. The headed cabbage appears profitable because it translates a financial rate of profitability of 275% ˃230,5% for cabbage of China. Nevertheless; the possibility of producing cabbage of China 3 or 4 times a year makes it competitive. The limit of this study is that we cannot assess land cost, cost of agricultural materials and family labour because of the phenomenon of mutual aid at the truck farmers