Based on the agricultural trade data of 35 countries between China and Africa from 2010 to 2019, this paper constructs a stochastic frontier gravity model and a trade inefficiency model to calculate the trade efficiency and trade potential of China Africa agricultural products, and analyzes the main influencing factors of Sino-Africa agricultural products trade efficiency and trade potential from four aspects: infrastructure level, economic system environment, political system environment, and the signing of "the Belt and Road" cooperation agreement. The results show that the average trade efficiency of agricultural products between China and Africa is 0.35, which shows a stable upward trend; Good liner transportation capacity, higher government financial expenditure, higher government work efficiency, and the signing of the "the Belt and Road" cooperation agreement can significantly improve trade efficiency; The countries with the highest trade efficiency in Sion-Africa agricultural products trade are South Africa, Mauritius and Egypt, and the countries with the greatest trade potential are Nigeria, South Africa and Benin; In addition, from a sub-regional perspective, the trade efficiency of northern Africa is high, the trade potential of Western and southern Africa is large, and the trade expansion space of eastern and Central Africa is large. In the future, it is significance to further optimize the agricultural industrial structure, improve the efficiency of agricultural trade, and promote the sustainable and high-quality development of Sino-Africa relations.