Based on high precise dating and the proxies sensitively respond to the climate and environment change outside of cave, speleothem (mainly stalagmite) is now an important pillar for quaternary research. Orbital and millennial-scale variations of stalagmite δ18O were reported as a recorder of Asian summer monsoon intensity in Asian monsoon area. But stalagmite δ18O are more complex in centennial to decadal-scale for other factors besides summer monsoon intensity will affect. Hence, the young stalagmite which can compare with meteorological record study is the key link for modern climate and paleoclimate for stalagmite research. Moreover, the key problem for young stalagmite study is determining the growth age. And it becomes very important to find a suitable method to determine the non-growth banding and low uranium stalagmite samples. In this study, an active stalagmite was chosen. For the low uranium and high 232Th concentration, the U-230Th dating was failed. The average growth rate was 1.96±0.23 mm/yr determined by 210Pb dating, but for existing of multi-layers intercrystal pores, the real growth rate may higher. The after bomb 14C told us the average growth rate was 2.10 mm/yr, no pre-bomb 14C data indicated the growth rate may higher. The previous study found the oxygen isotope of stalagmite in Guilin can record the summer monsoon precipitation, so according the meteorological data in Guilin station revealed the growth rate of DY-2 is 2.44 mm/yr, and the whole stalagmite growth from 1968 and stopped in 2009 when we collected. This fundamental work is the base of next stalagmite modern climate study, but this method can be a case for young stalagmite study.