The utility model discloses a portable rapid sampling device for oil field big tank gas and flue gas samples. The portable rapid sampling device comprises a peristaltic pump, a flexible gas inlet hose, a sampled gas collection container, a storage battery, direct current conveying cables, an inverter, alternative current conveying cables, a gas flowmeter, a flexible gas outlet hose and a sampled gas collection container, wherein a certain section, namely a peristaltic tube section, of the flexible gas inlet hose is limited between a roller rotor at a pump head and the inner surface of a pump shell and constantly contacts the rotor at the pump head and the inner surface of the pump shell; a direct current output end of the storage battery is connected with a direct current input end of the inverter through the direct current conveying cables; an alternative current output end of the inverter is connected with an alternative current input end of an alternative current motor of the peristaltic pump through the alternative current conveying cables; a tail end gas outlet of the flexible gas inlet hose is communicated with a gas inlet of the gas flowmeter; a gas outlet of the gas flowmeter is communicated with a gas inlet in the sampled gas collection container through the flexible gas outlet hose. Based on a sucking principle, the portable rapid sampling device can be used for sampling big tank gases and flue gases in a sealed manner under conditions of normal pressure and micro positive pressure.