Anti-seepage method and structure of drainage of same floor

The invention discloses an anti-seepage method and structure of drainage of the same floor. The anti-seepage structure of drainage of the same floor is characterized in that a double-floor-drain structure which is formed through combination of at least one visible floor drain (8) and at least one hidden floor drain (9) is applied, wherein the hidden floor drain (9) is arranged on a second waterproof layer (5) between a slag sloping layer (4) and a mortar protective layer (6), the scale height of an upper opening of the hidden floor drain (9) is located at the lowest position of the mortar protective layer (6), and at least one piece of non-woven cloth covers the upper opening of the hidden floor drain (9). The anti-seepage structure of drainage of the same floor can effectively solve the problem that water filters into a paving layer so that the anti-seepage effect is ineffective when an existing anti-seepage structure is used. By the adoption of the anti-seepage structure of drainage of the same floor, after seeping water enters the paving layer, the seeping water can slowly converge at an opening of the hidden floor drain via the mortar protective layer and the second waterproof layer, can converge at a first waterproof layer, and then enters a sewage pipeline to be discharged. Therefore, the seeping water cannot continuously filter into the slag sloping layer, and the anti-seepage purpose of the drainage of the same floor is achieved finally. The anti-seepage method drainage of the same floor is economical, simple, practical and good.