The invention relates to a testing stand and method of researching rotation characteristics of part of components in a fluid system, and belongs to the technical field of aerospace engineering. The testing stand of researching rotation characteristics of part of components in a fluid system includes the following components: a rotation stand rack (1), bearings (3), a rotating shaft (4), a shaft sleeve (5), a variable frequency motor (9) and a fixed foot rest (12); the rotation stand rack (1), the bearing (3), the rotating shaft (4), the shaft sleeve (5), the variable frequency motor (9) and the fixed foot rest (12) are used for mounting research object apparatus; the surface of the rotation stand rack (1) is provided with a screwed hole (11) for mounting research components; the rotating shaft (4) and the rotation stand rack (1) are connected through a flange, and are fixed by means of a plurality of bolts (2); a standstill locking hole (6) and a plurality of connection holes (7) are formed in the shaft sleeve (5); and a plurality of fluid channels (10) are formed in the rotation stand rack (1) and the rotating shaft (4). The testing stand of researching rotation characteristics of part of components in a fluid system can be used for researching the operating characteristics of the fluid in the part of components in the system in different overload environment, and has the advantages of being simple in structure, being simple to operate, and being efficient in operating.