A dismountable flooring panel comprising: a flooring panel body and two mounting members (121, 122), the flooring panel body having a first mounting edge portion and a second mounting edge portion, the first mounting edge portion and the second mounting edge portion being thinner than the flooring panel body and being laterally extended from the flooring panel body, the dismountable flooring panel being characterized in that: the first mounting edge portion has an upper surface including a middle-upper surface and two side-upper surfaces neighboring to both sides of the middle-upper surface, the second mounting edge portion has a bottom surface including a middle-bottom surface and two side-bottom surfaces neighboring to both sides of the middle-bottom surface, wherein the middle-upper surface, the two side-upper surfaces, the middle-bottom surface and the two side-bottom surfaces are flat surfaces perpendicular to an up-and-down direction of the flooring panel body, the middle-upper surface and each side-upper surface are positioned at different height levels in the up-and-down direction, and the middle-bottom surface and each side-bottom surface are positioned at different height levels in the up-and-down direction, the two mounting members (121, 122), which are independent of the flooring panel body and are respectively disposed protruding from the middle-upper surface of the first mounting edge portion and from the middle-bottom surface of the second mounting edge portion in the up-and-down direction, in which a mounting direction of the first mounting edge portion and a mounting direction of the second mounting edge portion are both parallel to the up-and-down direction of the flooring panel body, thereby enabling the mounting member (121, 122) of the flooring panel body to mount to a mounting member (122a, 121a) of another flooring panel body, and in that the first mounting edge portion of the flooring panel body overlaps in the mounting direction a second mounting edge portion of said another flooring panel body which is neighboring to the first mounting edge portion of the flooring panel body, the two mounting members are provided to face and engage with each other in a straight line along the mounting direction, and the two side-upper surfaces of the first mounting edge portion are provided to contact two side-bottom surfaces of the second mounting edge portion of said another flooring panel body in such a manner that the first mounting edge portion of the flooring panel body is mounted to the second mounting edge portion of said another flooring panel such that the flooring panel body is mounted to said another flooring panel neighboring to the flooring panel body in a direction parallel to the up-and-down direction. the first mounting edge portion has an upper surface including a middle-upper surface and two side-upper surfaces neighboring to both sides of the middle-upper surface, the second mounting edge portion has a bottom surface including a middle-bottom surface and two side-bottom surfaces neighboring to both sides of the middle-bottom surface, wherein the middle-upper surface, the two side-upper surfaces, the middle-bottom surface and the two side-bottom surfaces are flat surfaces perpendicular to an up-and-down direction of the flooring panel body, the middle-upper surface and each side-upper surface are positioned at different height levels in the up-and-down direction, and the middle-bottom surface and each side-bottom surface are positioned at different height levels in the up-and-down direction, the two mounting members (121, 122), which are independent of the flooring panel body and are respectively disposed protruding from the middle-upper surface of the first mounting edge portion and from the middle-bottom surface of the second mounting edge portion in the up-and-down direction, in which a mounting direction of the first mounting edge portion and a mounting direction of the second mounting edge portion are both parallel to the up-and-down direction of the flooring panel body, thereby enabling the mounting member (121, 122) of the flooring panel body to mount to a mounting member (122a, 121a) of another flooring panel body, and in that the first mounting edge portion of the flooring panel body overlaps in the mounting direction a second mounting edge portion of said another flooring panel body which is neighboring to the first mounting edge portion of the flooring panel body, the two mounting members are provided to face and engage with each other in a straight line along the mounting direction, and the two side-upper surfaces of the first mounting edge portion are provided to contact two side-bottom surfaces of the second mounting edge portion of said another flooring panel body in such a manner that the first mounting edge portion of the flooring panel body is mounted to the second mounting edge portion of said another flooring panel such that the flooring panel body is mounted to said another flooring panel neighboring to the flooring panel body in a direction parallel to the up-and-down direction.