An air massage device which allows for a uniform massage treatment upon a human body. This is accomplished by having a person lie upon an air-mat divided into three distinct sections, with each section corresponding to either the upper, middle or lower region of the human body. Within the upper and middle sections are a plurality of air-bags which can be inflated and deflated independently of each other. In order to massage one of the regions of the human body lying upon the mat, the air-bags within one of the mat sections are inflated and deflated in such a sequence that an inflation/deflation frequency of all the air-bags contained within that section of the air-mat will be equal over any set period of time. In this manner, a uniform massage is assured as each air-bag within the section will inflate and deflate an equal number of times.