The invention relates to a device for controlling the blood flow volume in an animal blood vessel in real for surgical operations, comprising a control device body, wherein a groove is arranged on the control device body; a switch above or below the groove is arranged on the control body; the control device body is provided with a through slot communicated with the groove above or below the groove; and the through slot is internally provided with a guide slot for embedding the switch or the switch is screwed in the through slot. The device has the advantages of simple structure and convenient operation and can be used for controlling the blood flow volume in an animal blood vessel in real time, providing a proper blood supply volume of an operation organ, guaranteeing the normal physiological function of the operation organ and providing a necessary operation time of a surgical operation, thereby providing more operation treatment chances for critical patients. The device can be used for replacing various blood controlling and stopping devices in the traditional surgical operations and is particularly suitable for controlling the blood flow volume in large operations of organs such as the liver, the heart, and the like.