The utility model relates to a multifunctional tanker for liquid medicine transportation in oil field construction. The device comprises a lifting pump, a power mechanism, a transport vehicle, and a front liquid tank, a middle liquid tank and a rear liquid tank which are fixedly arranged on a chassis of the transport vehicle, the bottoms of the front liquid tank, the middle liquid tank and the rear liquid tank are respectively connected with bottom shunting pipelines; the bottom shunting pipelines are gathered to the confluence pipeline; a main control valve is arranged at the tail end of theconfluence pipeline; a water feeding pipeline is connected to the confluence pipeline between the main control valve and the bottom shunting pipeline; the other end of the water feeding pipeline is connected with a lifting pump, a liquid outlet of the lifting pump is connected with one port of a three-way valve, the other port of the three-way valve is connected with a pumping output pipeline, thethird port of the three-way valve is connected with a circulating main pipeline, and the other end of the circulating main pipeline is connected with an inner circulating pipe through a steel pipe; aplurality of rows of sieve pores are formed in the lower part of the inner circulating pipe. According to the utility model, the functions of liquid medicine circulation and liquid medicine outward conveying are realized, so that the uniform and stable performance of construction liquid medicine is ensured, the construction is safe, and the occupied amount of construction equipment is reduced.