Serum transfusion

There's no such thing. There is plasma transfusion which is the transfusion of the non-cell (liquid) portion of the blood. Serum results from the coagulation of the red cells and does not contain clotting factors and some other proteins. Plasma, particularly fresh frozen plasma, can be used as a volume expander in the case of large blood loss or as a means of transfusing specific proteins when there isn't a need for addition red and/or white blood cells.

Thanks for your answer,But in biology text book I read so(serum is used in blood transusion).

I suspect that they used the word serum when they meant plasma. Serum was transfused back in the 40s during WWII before the advent of anti-coagulants in blood collection bags (bottles back then). It was used for volume expansion in the case of trauma, but it does not contain coagulating proteins to help stop bleeding.