The invention discloses a water source filtering apparatus for artificial culture of aquatic products. The apparatus comprises a second filtering case, a supporting frame, a first filtering case, a blanking case, a water injecting pipe, conveying wheels, a collecting box, a supporting sleeve, a dwang, a secondary filter screen, and a primary filter screen; a filter mesh belt is winded on two conveying wheels; the dwang is rotatably arranged in a secondary filtering case, an outer ring of the dwang in a right cavity of the second filtering case is separately and fixedly provided with a number two cleaning rod and a number one cleaning rod, the right cavity of the second filtering case is also respectively and fixedly provided with the secondary filter screen and the first filter screen, and the dwang slidely penetrates a number one guiding sliding sleeve and a number two guiding sliding sleeve. The product can be used for effectively solving the problems that water outlets are easy to block due to foreign materials in the water source filtering process and water cannot be pumped, foreign materials which are attached to the surface of the filter screen are easy to clean with labour saving and time saving as well as high efficiency, and the product is suitable for promotion and usage.