The invention discloses a medicine quantitative even-mixing device for intensive care infusion, and specifically relates to the field of intensive care. The medicine quantitative even-mixing device includes an outer shell, a first infusion tube, and a second infusion tube, wherein the first infusion tube is installed at one end of the outer shell in a penetrating mode. According to the medicine ration even-mixing device, a first solenoid valve, a first flowmeter, a second solenoid valve and a second flowmeter are arranged, two different bottles of conveying liquid medicines can be connected atthe same time, trough operation of a regulating mechanism, the liquid medicines can be injected into a body of a patient in a timed, quantitative, intermittent and alternate mode according to the treatment requirements, the two different liquid medicines can also be adjust to a certain proportion at any time and injected into the body of the patient in a mixed mode in the conveying process, tedious operation in previous conveying is reduced, the work efficiency is improved, a medicine can also be timely and accurately injected into the body of the patient, and the treatment effect is effectively improved. The medicine quantitative even-mixing device is most suitable for cases with more medicine varieties and complicated usage and especially suitable for the acute and intensive care patient, has higher practical using value, and is convenient to be popularized.