As one important member of main group metals,magnesium(Mg)takes great parts in fields involving biology,medicine,industry,and some others.Because of the unique characteristics including but not limited to low-cost,non-toxic and light-weight,Mg-based coordination polymers(CPs)with good performances such as gas storage and separation,catalysis and fluorescence have received certain attention in recent years.However,compared with the well-studied transition metal and rare earth metal based CPs,the report on Mg-CPs is relatively scarce.In this review we briefly summarize the synthesis,structural features,and fluorescent(FL)properties of Mg-CPs on the basis of recent related advances made in our lab.The chemical sensing,white emitting,and mechanoresponsive photoluminescence of selected FL-Mg-CPs are emphasized.