Based on the climatic; data of  ten years(1991一2000)China are analyzed.  The result show that the hail distribution is the spatial一temporal distribution(harac;teristi<、of hail in Northwest in belt patterns and the main hail zone is in the middle part of Tibetan plateau Qilian mountain and the west part of Tianshan mountain the more frequent、entre is in the south side along the east一WPSt mountains than that and the east side along the north一、outh mountains } the date o<(urrin} hails in mOthe south part of the plateau and the hail duration is lone but the hail days are the north part of Tibetan Plateau is earlier fewer than that in the south part of the plateau from the (urves of dec;adal and pentad evolution of hail days