By means of the statistical analysis of a large amount experimental data over 7 years, the soil loss equation in Heilongjiang province has been developed as follows, A=RKLSCP. The algorithm and data for every factor in the equation as well as the capacity for permitable loss of soil in Heilongjiang province have been determined, which provided the necessary technological data for furture use of the equation. At the same tune, the authors have made a test to the equation. The results indicate that the data accuracy by calcultaing exceeds 900o when compared with the practical data, and which proved that the equation may has a higher reliablity in furture application, The development of the equation may provide a series of scientific methods and base for monitoring and predicting soil and water loss, and for working out programmes of soil and water conservation,