A squeeze flat mop cleaning tool having an adjustable squeeze opening, comprising a mop bucket (1) and a flat mop (2); the flat mop (2) comprises a mop stick (3) and a flat mop head (4), and a wiper (5) is provided on the flat mop head; the mop bucket (1) has an independent squeezing area (6) and an independent cleaning area (7), and a squeeze device (S) is mounted on the mop bucket (1); the squeeze device (S) comprises a scraper plate (8) and a support member, and a squeeze opening (9) is formed between the scraper plate (8) and the support member. The scraper plate (8) is rotatably provided on the mop bucket (1), and the size of the squeeze opening (9) can be changed by the rotation of the scraper plate (8). When the flat mop head (4) is pressed downwards, the scraper plate (8) is positioned close to the support member, thereby reducing the squeeze opening (9), ensuring the best squeezing and cleaning effect; when the flat mop head (4) is pulled upwards, the wiper drives the scraper plate (8) to rotate upwards, thereby enlarging the squeeze opening (9), facilitating the operation of pulling the flat mop head (4) upwards and preventing the mop bucket from being lifted up.
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