本文首先阐述了BP神经网络的算法原理,然后结合数据分析软件R中进行金融分析的加载包quantmod来采集上市公司的股票数据,并利用R软件中专门提供BP神经网络算法的加载包nnet对所采集的股票数据建模,最后利用建立的模型对后续几天的股票数据进行预测。 This paper first describes the BP neural network algorithm theory, and then combined with data analysis software R financial analysis of the load package quantmod to collect the stock data of listed companies, and use R software to provide BP neural network algorithm to load the package nnet The collected stock data are modeled, and finally the forecast model is used to forecast the stock data in the next few days.