Construction method guaranteeing pouring formation of toilet water-stop ridge platform

The invention provides a construction method guaranteeing the pouring formation of a toilet water-stop ridge platform. The method comprises the following steps: conducting location, wherein beam and slab structure steel bars are bound, forming boards are erected, and the position of the toilet water-stop ridge platform is located; pouring concrete at the early stage, wherein a formwork is suspended for the water-stop ridge platform, the formwork is disconnected at joints between the water-stop ridge platform and a concrete wall, steel bars are installed, the elevation is controlled, forming board end openings are sealed up, and concrete is poured and maintained; conducting water repellent treatment on fracture surfaces, wherein after the concrete which is poured first is maintained for seven days, the formwork is detached, then the surface treatment is conducted on disconnection surfaces opposite to the concrete wall, surface dust and laitance are removed, neat paste and concrete interface treating agents or cement-based capillary crystallization type waterproof paint are applied, and then cement mortar is applied; pouring concrete at the later stage, wherein steel bars are installed between the concrete wall and the opposite fracture surface, forming boards are erected, and concrete is poured and maintained. The method is fast and convenient in construction and low in cost, the water-stop ridge platform formation quality can be guaranteed, and meanwhile the cross section at each disconnection position is subjected to the water repellent treatment, so that the water leakage is not caused.