The invention relates to a gob-side entry retaining method capable of avoiding dynamic pressure influence on coal mining. The gob-side entry retaining method comprises the following steps: dividing a coal bed into mining areas and dividing the mining areas into a plurality of sections; carrying out open-off cutting operation on the front ends of a tail gate and a haulage way of the first section, carrying out mining operation on open-off cuts forwards to form a working face, and forming a gob behind the mined working face; and repairing the haulage way of the first section from a position away Lm from the rear side of the working face in the gob, namely, a range less than Lm is used as a gob-side entry retaining temporary supporting section, and the gob-side entry retaining temporary supporting section is of a temporary steel frame supporting structure and is assisted by a monomer column for reinforced supporting. According to the gob-side entry retaining method, the gob-side entry retaining cost is reduced, the gob-side entry retaining difficulty is reduced, a certain distance is left between the gob-side entry retaining operation and the working face, the construction is not influenced with one another, a repaired roadway and an isolation strip are not suffered from high dynamic pressure influence before use, and the roadway is stable and firm and can be maintained easily.