Abstract:Faced with the complex domestic and international environment, the Chinese government took various measures to coordinate epidemic control with economic and social development, earning recovered growth of the economy in 2021. In 2022, China's economic development will be facing greater uncertainty. This study systematically analyzes and forecasts the development trend and regularity of China's medium and long-term economic growth rate. It is expected that the medium and long-term economic growth rate of China will show a downward trend in a wave shape. Based on input-output technology, econometrics, prosperity analysis, expert analysis, and scenario analysis, a systematic integrated factor prediction approach on annual GDP growth is proposed. Based on the review and analysis of China's economic development in 2021, as well as the current domestic and international situation, China's economic growth rate is predicted to revert to normal level in 2022, with an annual growth rate of about 5.5%. The policy suggestions are further proposed based on the analysis, including implementing science-based measures in epidemic prevention and control, strengthening the cross-cycle policy adjustment, boosting consumption more vigorously, achieving the goal of "double carbon" scientifically and flexibly, and accelerating the development of digital economy and industrial digitization.