1. Routine urinalysis revealed that nothing characteristic was found in the ep-mouse in comparison with the control, the CF-1 group. 2. Specific urine study for electrolytic substances revealed that specific difference was not found in Na, K, Cl and Mg but in Ca of which concentration in 100 ml urine volume was measured by about 160 % of the control group. Such data were obtained in case of young ep-mouse which had not manifested the convulsion yet, and it appears, therefore, to show that it is of the characteristic for the ep-mouse. 3. No difference was found of 17-OHCS in urine between the ep-mouse and the control group. 4. No significant difference was either found in amino acids in urine between the two group.