Disposable pre-embedded floor drain for drainage of constructional engineering and construction method of disposable pre-embedded floor drain

The invention discloses a disposable embedded floor drain for drainage of constructional engineering and a construction method of the disposable pre-embedded floor drain. The disposable embedded floor drain comprises a panel, a shell is fixedly connected to the outer surface of the lower end of the panel, a connector is fixedly connected to the outer surface of the lower end of the shell, and a reinforcing block is fixedly installed on the outer wall of the shell; and a positioning hole is formed in one side of the reinforcing block. According to the disposable pre-embedded floor drain for the drainage of the constructional engineering and the construction method of the disposable pre-embedded floor drain, the inner core mechanism is arranged, water enters a water leakage pipe through a water collecting head, one end of the water leakage pipe extends into a water flowing cavity, the water flows into the drainage pipeline from a water flowing groove, and due to the effect of atmospheric pressure, a part of wat