KUV 11370+4222 is a ZZ Ceti star discovered in 1996 , which has not been observed since then .
We performed observations for KUV 11370+4222 in 2010 January .
From the Fourier transform spectrum of the light curves , ten independent modes are detected .
We searched for the best-fitting model by using the observed periods to match the model periods and get it with the total mass of 0.625 { M _ { \sun } } , the effective temperature of 10950 K , and the helium mass fraction and hydrogen mass fraction of 10 ^ { -2.2 } and 10 ^ { -4.0 } , respectively .
We have found a triplet of frequency split by rotation , which are l = 1 modes .
Using the frequency shifts we estimate a rotation period of 5.56 \pm 0.08 h. Besides it , another l = 1 mode is identified .
The other observed periods are identified as l = 2 modes .
At last we investigated the property of the mode trapping .