In the present invention, a squeeze flat mop cleaning tool with an adjustable squeeze opening is provided, which includes a mop bucket 1 and a flat mop 2, and the flat mop includes a mop stick 3 and a flat mop head 4 Included, and provided with a wiper 5 on the flat mop head; The mop bucket 1 is provided with an independent water squeezing zone 6 and an independent washing zone 7, and a squeezing device S is installed on the mop bucket 1; The squeezing device S includes a scraper 8 and a supporting part, and a squeeze opening 9 is formed between the scraper 8 and the supporting part. The scraper of the present invention is rotatably provided on the mop bucket, and the rotation of the scraper can change the size of the squeeze opening; When the flat mop head is squeezed down, the scraper is placed in a narrow position with respect to the supporting part, so that the squeeze opening is small, thereby securing the optimum water squeezing effect, and when the flat mop head is pulled up, the wiper drives the scraper and upwards. By rotating so that the squeeze opening becomes large, the operation of pulling the flat mop head upward becomes easier, thereby preventing the mop bucket from being lifted.
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