Pr-containing giant magnetostrictive materials with MgCu2-type possess high magnetoelastic properties due to low-cost light rare earth Pr, which show a good practical prospect. Much attention has been focused on the synthesis and the study of the magnetostrictive properties for these materials. In this paper, we review the recent developments of the studies based on elements substituting and composition adjusting as well as the preparation technique. The growth methods of single-crystal and oriented polycrystal are also mentioned.