The invention relates to a well drilling method. The well drilling method comprises the following steps that 1, a plurality of drilling positions are arranged adjacently; 2, one of the multiple drilling positions is subjected to upper-section well drilling and well completion, then the adjacent next drilling position is subjected to upper-section well drilling and well completion, and the operations are conducted repeatedly until all the drilling positions are subjected to upper-section well drilling and well completion; 3, the first drilling position subjected to upper-section well drilling and well completion is subjected to lower-section well drilling and well completion, then the adjacent next drilling position is subjected to lower-section well drilling and well completion until, and the operations are conducted repeatedly until all the drilling positions are subjected to lower-section well drilling and well completion; and 4, the second step and the third step are conducted repeatedly until well drilling on the multiple drilling positions is completed. According to the well drilling method, the well drilling process is decomposed into a plurality of subprocedures. The well drilling subprocedure of each well and the well drilling subprocedures of other wells can be conducted at the same time, so that the constructionefficiency is improved.