The invention discloses an absorbent hole of floor vacuum cleaner, which comprises the following parts: extracting head (1), connecting pipe (4) to connect extracting pipe, flexible conductor (5), wherein the extracting head possesses plane with one broad side (2) and narrow side (3); the flexible conductor (5) connects connecting pipe (4) with floor extracting mouth of extracting head (1) along flowing direction, which provides articulated joint part (6) between extracting head (1) and connecting pipe (4) to make flexible conductor (5) not bear axial force; the axial force is transmitted fromconnecting pipe (4) to extracting head (1).