The invention discloses a full-flexible 
asphalt pavement structure design method, belongs to the field of 
asphalt pavement structure design in 
road engineering, and aims to solve the technical problem that the existing 
asphalt pavement structure design is disjointed from 
material design. According to the technical scheme, the method specifically comprises the steps of S1, determining the accumulative equivalent axis number Ne within the design 
age limit of a full-flexible 
asphalt pavement structure, and preliminarily planning the pavement structure; S2, testing and calculating the 
asphalt concrete complex modulus of the 
horizon, and constructing an 
asphalt concrete fatigue model; S3, according to an 
asphalt concrete strain allowable value calculation formula, calculating an asphalt mixture layer bottom flexural-
tensile strain allowable value epsilon t-allowable; S4, calculating a roadbed top surface compressive strain allowable value epsilon z-allowable according to a roadbed top surface compressive strain calculation formula; S5, determining a bending-
tensile strain calculation value epsilon t-calculation and a soil-based compressive strain calculation value epsilon z-calculation of a structural calculation layer by applying an elastic layered 
system theory; and S6, carrying out structure checking calculation by taking the conditions that the bending-
tensile strain allowable value epsilon t-allowable is greater than the calculation value epsilon t-calculation of the bottom of the asphalt mixture layer and the compressive strain allowable value epsilon z-allowable is greater than the calculation value epsilon z-calculation of the top of the soil foundation as checking calculation indexes.