The invention relates to a using method of a high sealing property expansion joint. The using method comprises the following steps of: selecting raw material; calculating the raw materials; stirring the raw materials; performing mold forming; repeating the steps; mounting the expansion joint structure; and performing debugging connection. The high sealing property expansion joint provided by the invention is simple in structure and convenient to use, prevents leakage as a result of a telescopic gap of a pipeline, so that the sealing property and the stability of a runner are guaranteed.