Abstract: By using multiple-instant wind data, some experimental results of low latitudes data assimulation are discussed. The empirical orthogonal iteration method is used in data assimulation. Two methods in constructing data matrices are tested and compared.In the first method, the wind components are treated separetely in two different matrices. In the second method the wind components are treated as two elements in one matrix. Results show that the latter is better than the former. It is indicated that the obtained assimulation values are useful informations for objective analysis.