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The special distribution of root and root growing dynamic in the grape growth period were studied with a core sampling scheme and ET—100 system. The results showed that roots of grape vine centralized in the radial space between 0 and 100cm, and the amount of the roots accounted for over 80% of total roots. The horizontal distribution of root density of grape vine was minus exponent. The roots of grape vine centralized in the depth between 0 and 60cm, and the amount of the roots accounted for over 75% of total roots. Under the alternate partial root zone irrigation, the available root of grape vine grew differently in the wetted zone and in the dry zone. It was limited by soil moisture condition and its own growing. The distribution of new root of grape vine was parabola in both the wetted zone and the dry zone.