Abstract: In order to analyze the settlement development trend and stability of Liwu waste dump of Guangdong province Dabaoshan mining Co., Ltd., the settlement prediction and stability evaluation of the waste dump are investigated.Based on the settlement data of Pile E on platform 757 in Liwu waste dump from July 2018 to June 2019, the training samples are constructed, and then Elman model is established to predict the settlements from July 2019 to September 2019 and the predicted settlements are compared with the actual ones.On this basis, the monthly increments and average growth rate of three consecutive months of the predicted value and actual value of settlement are calculated, and the relationship between the stability evaluation result and the actual stable state is thoroughly discussed.The result shows that the predicted settlements by Elman model are basically consistent with the actual measurements and have relatively high prediction accuracy, which can play a role in the stability evaluation of waste dump.According to the comparison of the monthly increments and the average growth rate between the predicted settlements and the actual ones, it can be decided that Liwu waste dump is in a stable state, consistent with the actual situation and the evaluation results are relatively safe.