The invention discloses a simple and convenient goaf bundle pipe gas extraction device and method. The device mainly comprises a gas extraction pipeline, a phi 219 main pipe, seven one-sixth ball valves, a flow meter, a connecting pipe, a water drainage pipe, a sampling connecting pipe, a rubber pipe, a pump, connecting pipes of the main pipe and bundle pipes, the four bundle pipes, an embedded main pipe and a hose. The method includes the steps that gas is extracted from the interior of a goaf through negative pressure in the gas extraction pipeline, gas in the goaf is driven by negative pressure in the gas extraction pipeline to flow into the phi 219 main pipe through the bundle pipes, the pump is connected with the phi 219 main pipe through the rubber pipe to pump a proper amount of gas, sampled gas is collected in a sealed mode through sampling bags and analyzed through a gas chromatograph finally, the concentration change rule of various types of gas in the goaf is acquired, and on the basis, the positions and the ranges of three residual coal spontaneous combustion zones in the goaf are judged. The device and method have the advantages of being safe, efficient, simple, convenient to use and capable of saving energy.