Abstract

Since reforming and opening to the outside world, Chinese aquiculture has developed very quickly. The total
output of aquiculture has been ranking first in the world over ten years, but it still has many problems. In the
article, these problems which existing in the aquiculture of China are listed, and they have seriously influenced
the quality of aquatic products of China and destroyed the whole ecological environment of aquiculture. The
factors influencing the water environment include: (1) residual feeds and excrements, (2) chemical medicines
used in aquiculture, (3) escaping aquatic animals. And the aspects which were influenced including: (1) the
influence on the physiochemical factor of water, (2) the influence on the bottom matters, (3) the influence on the
plankton, and (4) the influence on the bottom dwellers are analyzed. To reduce the influence and pollution of
aquiculture on the ecological environment, enhancing the quality of composite feed is one important approach.

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