Abstract: A diagnostic model of the sea surface winds and a computational model of the ocean surface currents are developed in this paper. The sea surface winds and the ocean surface currents can be obtained by iteration method as long as the sea surface level pressure fields are input. The capabilities of the two models are tested by the use of the multiyearly averaged January and July sea surface level pressure fields. Results show that the diagnosed sea surface winds from the sea surface pressure fields are very close to the observations both in winter and in summer, and they are quite different from the geostrophic winds. The ocean surface currents driven by the sea surface winds and the sea surface pressure fields are also close to the observations. From the results it is seen,too, that the sea surface level pressure field should not be neglected when the ocean currents are being computed, for the gradients of the free sea surface heights are almost offset by those of the sea surface pressure fields.① Supported by the Naticnal Natural Science Foundation of China.