Nanoscale mgnetic materials as a kind of novel functional inorganic materials have been widely employed for biosynthesis, bioseparation, biosensors, immunoassays, organocatalysis, drug delivery, data storage and environmental improvement,due to their special properties such as high specific surface area, strong magnetic responsivity, chemical durability,biocompatibility and so on. So far, various synthetic methods have been devised to fabricate magnetic nanomaterials, including chemical coprecipitation, organometallic pyrolysis, sol-gel techniques, hydrothermal & solothermal synthesis, etc. In recent years, hydrothermal & solvothermal synthesis method has received extensive attention and is widely used in industrial production because of its advantages of simple reaction conditions, low cost, high activity, good yields and green-friendly. This review introduced four kinds of nanoscale magnetic material synthetized by hydrothermal or solvothermal,which are ferrite,composite material,magnetic alloy material,and other magnetic material. 1 Introduction
2 Ferrite
2.1 Unitary ferrite
2.2 Binary ferrite
3 Composite material
3.1 Ferrite/inorganics composite material
3.2 Ferrite/organics composite material
4 Magnetic alloy material
5 Other magnetic material
6 Conclusion and prosperct