The invention relates to a water taking pipe of a water boiler and a control method of the water taking pipe. The water taking pipe of the water boiler is communicated with a boiled water supply opening of the water boiler, and comprises a main pipe, a drainage unit and a ventilation unit, one end of the main pipe is communicated with the boiled water supply opening, and a water taking faucet allowing boiled water to flow out is arranged at the other end of the main pipe; a boiled water electromagnetic valve used for controlling boiled water to inject the boiled water into the main pipe is arranged at the position, close to the boiled water supply opening, of the main pipe in series, a water taking electromagnetic valve used for controlling boiled water to flow out is arranged at the position, close to the water taking faucet, of the main pipe in series, and a temperature sensor used for measuring the temperature of water in the main pipe is further arranged at the position, between the boiled water electromagnetic valve and the water taking electromagnetic valve, of the main pipe; and a control circuit of a water outlet control plate is used for controlling opening and closing of the boiled water electromagnetic valve, the water taking electromagnetic valve, a drainage electromagnetic valve and a gas guide electromagnetic valve, so that cold boiled water, at the temperature lower than a preset numerical value, in the main pipe is automatically drained out from a drainage branch.