Test results of 51 soil samples taken from a low yield banana garden indicate that the soil is low in pH, organic matter, total N, available N, slowly available K, readily available K, available Ca, available Mg, and available B, but rich in available P, Zn, S. Test of 51-leaf samples show they were moderate in N, P and K, high in Zn but low in Ca, Mg, S and B. The two~year field experiment indiate that the effects of N and K differed significantly. A high application rate of N and K might obviously increase yield of banana in a garden low in soil fertility. Regulating soil pH and supplementing Ca and Mg are also important yield~increasing measures.