If the toilet can't hold water, here are some possible solutions:
1.Adjust the float or float inside the tank: Open the lid of the toilet tank and check the position of the float or float. The float or float controls the water level inside the tank, stopping the flow of water when it reaches a certain level. Make sure the float or float is not stuck or damaged, and adjust its position so that it works within the correct water level range.
2.Check if the filling valve is normal: The filling valve controls the flow of water into the toilet tank, and if the filling valve fails, the water in the tank will keep flowing out. Check the filling valve for blockages or damage, and if so, try cleaning or replacing the filling valve.
3.Check the conduit and seals: There may be a leak at the bottom of the toilet. Check that the drain pipe, the connection of the tank to the bottom of the toilet, and the seals are tight and normal. If you notice a leak or looseness, try reinstalling or replacing the seal.
4.Check the flush valve or flush button: If the flush valve or flush button is stuck or damaged, it can cause a continuous flow of water. Check that the flush valve is working properly and that the flush button springs back into place.
If the above methods do not solve the problem, it is recommended to contact a professional toilet repair service personnel for maintenance. Please note that before performing any repair operations, make sure to close the toilet water supply valve to avoid inconvenience or flooding caused by the flow of water.