Abstract: The character and causes of the disaster of the “16·7” rainstorm in Hebei province were analyzed. The “16·7” torrential rainfall was the second since the meteorological record in Hebei province. The rainstorm coverage set a new record, daily precipitation exceeded the extreme value of July, precipitation concentrated in the Taihang mountains, and the rain was strong and lasted for a long time. It caused 10.436 million people was to be affected, and the direct economic loss was 57.457 billion in Hebei province. From the perspective of the affected industries, infrastructure losses was the most serious; From the disaster-stricken areas, the Taihang mountains in the south-central region were the heaviest, especially in Shijiazhuang, Xingtai and Handan. The main reasons of the disaster wereThe precipitation intensity was large and lasted for a long time, and some areas in the mountainous areas reached once in a hundred years; The Taihang mountain had a large elevation difference, and topographical factors lead to flooding, which was the secondary factor for disasters; A variety of severe weather concurrency, heavy rains in the Taihang mountain were accompanied by strong winds, and coastal winds caused storm surges, aggravating disasters; Unscientific human activities occupying the flood channel were also one of the reasons for the expansion of the disaster.

Key words: “16·7” torrential rain;, disaster, cause of disaster