Using the observations of cloud and precipitation from July to September during 1900 － 2009 in Linxia，the statistical character
about the parochial cloud and its relation with rainfall in midsummer in Linxia was analyzed，and the instruction relation about the
parochial cloud at Linxia observation station to territorial rain weather and turning weather process was summarized． Results show that
the primary period in which the yellow steamed bread cloud was observed is from the last ten － day of July to the first ten － day of September，
and occurrence of the yellow steamed bread cloud could indicate it would rain in 24 or 48 hours，the probability of moderate
rain is biggish． The yellow steamed bread cloud occurring at Linxia observation station has well instruction significance to rain weather
and turning weather process in Linxia．