DeepSpeech2 on PaddlePaddle is an open-source implementation of end-to-end Automatic Speech Recognition (ASR) engine, based on Baidu's Deep Speech 2 paper, with PaddlePaddle platform. Our vision is to empower both industrial application and academic research on speech recognition, via an easy-to-use, efficient and scalable implementation, including training, inference & testing module, distributed PaddleCloud training, and demo deployment. Besides, several pre-trained models for both English and Mandarin are also released. To avoid the trouble of environment setup, running in Docker container is highly recommended. Otherwise follow the guidelines below to install the dependencies manually.