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The abundancepatterns of r-process-enhanced stars containkey information required to constrain the astrophysical site(s) of r-process nucleosynthesis,and to deepen our understanding of the chemical evolution of our Galaxy.To expand the sample of known r-process-enhanced stars,we have developed a method to search for candidates in the LAMOST medium-resolution (R ～ 7500) spectroscopic survey by matching the observed spectra to synthetic templates around the Eu Ⅱ line at 6645.1 (A).We obtain a sample of 13 metal-poor (-2.35 ＜[Fe/H]＜-0.91) candidates from 12209 unique stars with 32774 medium-resolution spectra.These candidates will be further studied by high-resolution follow-up observations in the near future.We describe some extensions of this effort to include larger samples of stars,in particular at lower metallicity,using the strength of the BaⅡ line at 6496.9 (A).