Abstract: The pile with porous basket can provide a better effect for velocity reduced than the one without porous basket in the lab tests. Therefore, group piles with porous baskets setting in the front of three bridges are used for protection in the field in Taiwan. From the results, the pile groups with porous baskets not only reduce the flow velocity owing to weaken scour depth of pier, but also resist the drifters to impact the piers. Hence, the method of the piles with porous basket to protect pier scouring is thought to be a very recommendable skill.