The invention provides a spherical gravitational venous transfusion monitor 1. The spherical gravitational venous transfusion monitor 1 is mainly formed by characteristic structure components such as a string bearing rod 2, a spherical synthetic bearing shell 3, a synthetic center assembling pipe 4, a flow control module 5, a fastening cap 6, a synthetic console surface 9, a loudspeaker 47, a flow control motor 61 and a photosensitive detection pipe 71. The spherical gravitational venous transfusion monitor provided by the invention can be matched with a common disposable gravitational venous transfusion device for use, and the integration design is suitable for a hospital application environment; the modernization requirement on venous transfusion management in the big data time can be fully met by a cut-off function, a warning function, a constant-speed transfusion function and the like; through the promotion and the application of the spherical gravitational venous transfusion monitor, a large amount of labor resources can be saved, unnecessary work of medical staff can be reduced, the operation load of the hospital can be reduced, the nursing service quality can be increased, and huge economic benefit and huge social benefit are obtained.