The embodiment of the invention discloses a longitudinally superposed developing three-strata oil reservoir well pattern and a deployment method of the longitudinally superposed developing three-strata oil reservoir well pattern. To the longitudinally superposed developing three-strata oil reservoir, the well spacing of a basic well pattern is 2*(square root of 2)*L; after being encrypted once, the well spacing of a middle transitional well pattern is 2L; after being encrypted twice, two superposed inverted nine-spot well patterns with well spacing of 2L are formed; after being encrypted for three times, two superposed inverted nine-spot well patterns with well spacing of 2L and one superposed inverted nine-spot well pattern with well spacing of (square root of 2)*L are formed; and after pairwise alternatively development, the well spacing of the plane well pattern of each strata has a rational well spacing of L; the evolution process of the well spacing is as follows: 2*(square root of 2)* L to 2L to (square root of 2)*L to L; the middle process of well patterns conversion with a well spacing of 2L and (square root of 2)*L is added; at the same drilling speed, well placement uniformity coefficient and reserve control speed are increased; the well spacing is encrypted in the alternation of well patterns; each well pattern can realize order development to each longitudinal strata; the utilization ratio of the well patterns is improved; meanwhile, the oil reservoir is uniformly used, so that the method is in favor of increasing accumulated oil production of an oil field and improving the recovery ratio; and interlayer interference generated by commingled extracting oil in multiple oil layers of longitudinal series of strata is avoided.