the Neogene Guantao Formation is the main oil and gas pay horizon in the Jiyang depres—sion．In last few years，people have paid more and more attention to exploration of shallow gas，but it is difficult to find large—scale shallow gas pools，which does not match with the reserves ofthis horizon．What is the cause?In this paper，an attempt is made to analyse the influence ofshallow reservoir and cap rocks on the distribution of shallow gas and predict the areas favorabIefor the distribution of shallow gas．