Peristaltic pump capable of precisely controlling flow

The utility model discloses a peristaltic pump capable of precisely controlling flow, which comprises a peristaltic pump main body, the peristaltic pump main body comprises a protective box and a hose arranged on the protective box, and the protective box is provided with a flow control mechanism for controlling the flow of the hose; and the quantity control mechanism comprises a protection box arranged on the protection box. The flow control pipe can be stretched through the first connecting pipe and the second connecting pipe, the adjusting plate can be driven to move by rotating the manual screw rod, and the distance between the first connecting pipe and the second connecting pipe can be adjusted by driving the first connecting pipe to move through the adjusting plate, so that the stretching degree of the flow control pipe is adjusted; the size of the inner diameter of the flow control pipe can be changed, the flow of the peristaltic pump can be precise by being matched with a flow meter, the flow control