The utility model discloses a detachable SMW construction method pile wall surface slicking device. Excavator bucket, wherein the bucket tooth sleeve is used in cooperation with the excavator bucket,and the connecting piece is used for detachably installing the bucket tooth sleeve on the excavator bucket. The excavator bucket comprises a bucket body and a plurality of tooth holders integrated with the bucket body, the bucket tooth sleeve comprises a scraper blade and a plurality of bucket teeth arranged on the scraper blade and matched with the tooth holders in a one-to-one correspondence mode, and the bucket tooth sleeve can be connected with the excavator bucket through the bucket teeth and the tooth holders by means of connecting pieces. According to the utility model, the damage to the toothholder can be avoided; the device has the advantages of being convenient to machine, easy to disassemble and assemble, free of resource waste, capable of being widely used and the like, meanwhile, the construction cost can be saved, the construction period is greatly shortened, the device can be applied to foundation pit wall scraping and foundation pit bottom leveling, the workload of manual cleaning can be effectively reduced, and undisturbed soil at the pit bottom is not disturbed.