The invention relates to a method for adjusting flow and pressure of calcium carbide furnace gas. The method relates to a flow meter, a front overhauling ball valve, a rear overhauling ball valve and a pressure indicator, wherein the flow meter, the front overhauling ball valve, the rear overhauling ball valve and the pressure indicator are sequentially connected. The method is characterized in that an adjusting valve is arranged between the front overhauling ball valve and the rear overhauling ball valve, a pressure transmitter is arranged behind the adjusting valve, three sets of adjusting devices connected in parallel are utilized, the adjusting valve is used for adjustment, and therefore the calcium carbide furnace gas is adjusted in a high-flow and low-dropout mode, the energy utilization rate is increased, and pollution to environment is lowered. The method solves the problems that the current production process manufacturing ethylene glycol through the calcium carbide furnace gas can not be reasonably utilized due to the instability of the flow, the temperature and the pressure fluctuation of the calcium carbide furnace gas, the environment is polluted and the energy sources are wasted, and has the advantages of being small in investment, easy to implement, low in operation cost and simple and reasonable in process, protecting environment and reducing emission. The method is capable of being widely applied to gas adjusting modes, and particularly suitable for adjusting the calcium carbide furnace gas in the production process manufacturing the ethylene glycol through the calcium carbide furnace gas.