The utility model discloses a liquid preparing system which comprises a liquid preparing pipe, a liquid preparing needle with the tail communicated with a liquid outlet of the liquid preparing pipe and a peristaltic pump used for driving liquid in the liquid preparing pipe to be output and further comprises a clamping device, a fixing part used for fixing the tail of the liquid preparing needle isarranged on the upper portion of the clamping device, and a handle part is arranged on the lower portion of the clamping device. According to the liquid preparation system, the liquid preparation needle is provided with the clamping device, the tail of the liquid preparation needle is fixed through the clamping device, and meanwhile due to the existence of the handle part, liquid medicine can beconveniently extracted, and a medicine bottle rubber plug can be conveniently inserted; Operation is convenient and fast, the weight is light, hands do not make direct contact with the needle away from medicine, mutual pollution between the hands and the needle is effectively avoided, and safety and reliability are achieved. Therefore, the liquid preparation system can effectively solve the problem that the liquid preparation needle is inconvenient to hold and take.