Informationization is the development trend around the world. In terms of agriculture, it is informationization that the Chinese government takes as a significant strategy in order to solve the ‘agriculture, farmer and village’ problem. Focusing on how to measure the contribution of agricultural informationization to economic growth, this paper explores several key issues in current literatures and summarizes the latest debates in respects of the concept of agricultural informationization, the evaluation method of agricultural informatization, and the calculation method of contribution rate of agricultural informationization to economic growth. This paper finally argues that further research is urgently needed for the contribution rate of agricultural informationization to economic growth due to the existing literature gap regarding the research scope, calculation method, informationization’s impact on agriculture itself, and the practice.