The utility model discloses a shale gas reservoir horizontal well three-dimensional development well pattern structure which comprises at least one row of horizontal wells (1) located in a preset wellfield on the ground. Wherein each row of horizontal wells (1) comprises at least four horizontal wells (1) which are sequentially arranged according to a number label sequence; each horizontal well (1) with an odd number of numbers is provided with a first horizontal section (11) arranged along a first shale development reservoir (R1), and each horizontal well (1) with an even number of numbers is provided with a second horizontal section (12) arranged along a second shale development reservoir (R2). The well pattern structure can effectively improve the longitudinal utilization degree of theshale gas reservoir.