The present invention relates to a stairs-type hydrophilic revetment block having seawater flow ports and a construction method thereof. The existing coastal breakwaters, embankment, revetments, etc. are constructed to pacify the sea areas. However, because of occlusiveness of their structure, seawater flow is significantly reduced and pollutants are accumulated without being diffused to the open sea. As a result, the self-cleaning action is interrupted and the benthic ecosystem is in danger of being destroyed due to oxygen deficiency as the accumulated organic materials are decomposed. And, the conventional structures are designed and constructed mainly to block waves in order to pacify the sea areas and protect harbor facilities. In contrast, the stairs-type hydrophilic revetment block having seawater flow ports of the present invention provides easy access for people, reduces reflected waves, pacify the sea areas, maximizes improvement of seawater quality through smooth inflow and outflow of seawater and reduces cost needed for setup and protection of mound. The hydrophilic revetment block of the present invention comprises a base block, an intermediate block and an intermediate block having reservoirs. The present invention also provides a construction method using the revetment block.