A circulating filter comprises a body, a baffle plate, at least one baffle plate unit and at least one water collecting plate.The body comprises a front plate, a rear plate, a left plate, a right plate and a bottom plate.The front plate, the rear plate, the bottom plate, the left side plate and the right side plate form an accommodation space.The front plate is provided with a first front fixing part and a second front fixing part, and the rear plate is provided with a first rear fixing part and a second rear fixing part.The baffle is butted above the first front fixing part and the first rear fixing part, one end of the baffle which is not connected with the first front fixing part and the first rear fixing part is butted to the right side plate, the other end of the baffle is close to the left side plate, and an inlet is formed between the baffle and the left side plate.The partition unit is contained in the holding space, and the holding space area can be divided into at least two communicating filter chambers.After the user places the filter material in each filter chamber, the filter material can be effectively used to improve the overall filtering effect through the overall technical characteristics.一種循環式過濾器，包含一本體、一擋板、至少一隔板單元及至少一集水盤。該本體包含一前板、一後板、一左側板、一右側板及一底板。該前板、該後板、該底板、該左側板與該右側板之間形成一容置空間。該前板設有一第一前卡固部及一第二前卡固部，該後板設有一第一後卡固部及一第二後卡固部。該擋板抵接在該第一前卡固部上方與該第一後卡固部上方，該擋板未連接該第一前卡固部與該第一後卡固部的一端是抵接於該右側板，該擋板的另一端靠近該左側板且該擋板與該左側板之間形成一入水口。該隔板單元容置在該容置空間，可將該容置空間區分成至少二相通的過濾室。使用者將濾材放置在每一該過濾室後，通過整體技術特徵能有效利用濾材以提升整體過濾效果。
