The invention discloses a burying method for pore water pressure gauges. The burying method includes the steps that 1, a hole is drilled or a sleeve is buried in a predetermined position; 2, clay ball paper bags are manufactured according to the diameter of the drilled hole or the sleeve, meanwhile, the drilled hole or the sleeve are cleaned, and the clay ball paper bags are made of drawing paper soluble in water; 3, one pore water pressure gauge is placed in the drilled hole or the sleeve and located below a specified depth; 4, filter materials are guided into the drilled hole or the sleeve, and the pore water pressure gauge is lifted to the specified depth after 5-6 minutes; 5, one clay ball paper bag is placed into the drilled hole or the sleeve and sinks completely to form a clay layer; and 6, the step 3 to the step 5 are repeated until all the pore water pressure gauges are buried. According to the method, the burying quality of the pore water pressure gauges can be ensured through the clay ball paper bags, distortion of test data is avoided, and engineering quality is ensured.