Abstract: In order to study the regularity of drought damage at Tangshan region,the data of drought from A.D. 1164 to 2000 in this area was collected and analyzed in the paper. The results showed that drought struck this area 127 times in total and occurred every 6.6 years. The low-grade,middling-grade,serious-grade and the worst-grade of drought damage according to the percentage of happening times,were 45.7%,25.2%,17.3%,11.8%,respectively. The frequency of drought was marked into four levels:very little,little,much and very much in according to time interval( 46 years,5 years,10 years and 2.5 years respectively). The frequency of the drought after A.D. 1800 was 3.6 times than it was before. The emergence of drought was in line with the climate abnormal change and rainfall distribution character.

Key words: Tangshan, Tangshan, Drought damage grade, Drought damage causes