The invention relates to collecting equipment, in particular to floating algae collecting equipment for sewage treatment, and aims to solve the technical problem of providing the floating algae collecting equipment for sewage treatment capable of collecting plenty of floating algae at one time and preventing the collected floating algae from returning to water. The floating algae collecting equipment for sewage treatment comprises two first fulcrum bars, a first mounting plate, a lifting device, a first electric reel, a first stay wire and the like, wherein the two first fulcrum bars are symmetrically arranged on left and right sides of a dam; the first mounting plate is arranged at the tops of the first fulcrum bars on left and right sides; the lifting device is arranged in the middle ofthe bottom of the first mounting plate; and the first electric reel is arranged on the left side of the bottom of the first mounting plate. The floating algae collecting equipment realizes the effectsof collecting plenty of floating algae at one time and preventing the collected floating algae from returning to water; a baffling frame can prevent a motor from being splashed by water; and a grooveenables a user to replace the baffling frame conveniently.