A floss-type tooth cleaning device , configured to clean an interdental space in an oral cavity after being wound with a bare-wire dental floss (L), the floss-type tooth cleaning device comprising: a grip portion ; a bracket portion connected with the grip portion , the bracket portion being formed with a first floss groove , a second floss groove , and a tooth cleaning portion being hollow and formed between the first floss groove and the second floss groove ; and a floss positioning portion disposed on a plane (B) of the bracket portion , the floss positioning portion being configured to allow an initial end (L1) and a final end (L3) of the bare-wire dental floss (L) to be wound and fixed thereon, the floss positioning portion comprises a cylinder and a position limiting cap ; characterised in that the floss-type tooth cleaning device further comprises a first sheet , a lower portion of the first sheet being the grip portion ; a second sheet formed with a first through hole ; a third sheet formed with a second through hole ; wherein an upper portion opposite to the lower portion of the first sheet , the second sheet and the third sheet together form the bracket portion , when assembling, the cylinder is inserted through the second through hole of the third sheet and the first through hole of the second sheet , such that the first sheet , the third sheet and the second sheet are fixed and assembled with each other; wherein a size of the third sheet is smaller than that of the first sheet and the second sheet , such that a floss groove is formed around the third sheet and concaved between the first sheet and the second sheet , the floss groove comprises the first floss groove and the second floss groove and is for allowing the bare-wire dental floss (L) to pass through. a grip portion ; a bracket portion connected with the grip portion , the bracket portion being formed with a first floss groove , a second floss groove , and a tooth cleaning portion being hollow and formed between the first floss groove and the second floss groove ; and a floss positioning portion disposed on a plane (B) of the bracket portion , the floss positioning portion being configured to allow an initial end (L1) and a final end (L3) of the bare-wire dental floss (L) to be wound and fixed thereon, the floss positioning portion comprises a cylinder and a position limiting cap ; characterised in that the floss-type tooth cleaning device further comprises a first sheet , a lower portion of the first sheet being the grip portion ; a second sheet formed with a first through hole ; a third sheet formed with a second through hole ; wherein an upper portion opposite to the lower portion of the first sheet , the second sheet and the third sheet together form the bracket portion , when assembling, the cylinder is inserted through the second through hole of the third sheet and the first through hole of the second sheet , such that the first sheet , the third sheet and the second sheet are fixed and assembled with each other; wherein a size of the third sheet is smaller than that of the first sheet and the second sheet , such that a floss groove is formed around the third sheet and concaved between the first sheet and the second sheet , the floss groove comprises the first floss groove and the second floss groove and is for allowing the bare-wire dental floss (L) to pass through. <EOS>