Corn cob itself is not a drug, there is no therapeutic effect, for dry mouth and yellow urine can not play a significant role in relieving. Summer due to the hot weather, dry mouth, yellow urine may be a normal physiological phenomenon, there is no need for treatment, drink more water can be relieved, if the pathology, the Chinese medicine that dry mouth, yellow urine and other symptoms are mainly related to the heat evidence, need to select the appropriate heat-cleansing drugs according to the evidence of the real and real in order to treat. Clinically, if the symptoms of dry mouth and yellow urine are accompanied by fever, red face, sweating, constipation, red tongue with yellow fur, and number of pulses, then it is considered to be a real heat syndrome, and can be treated with heat-clearing and fire-dissolving drugs, such as Huanglian Xieyue Tang (Huanglian Xieyue Tang). If dry mouth and yellow urine are accompanied by night sweating (sweating abnormally after going to sleep and stopping after waking up), insomnia, red tongue with little moss, and fine pulse (pulse becomes narrower, thinner and faster), then it is a case of Deficiency-Heat syndrome, which can be treated with Liufei Dihuang Pill, etc. Consult your doctor for specific medication. Consult your doctor for specific medication.