  This paper reports on the discovery that an eclipsing binary system, EPIC
202843107 , has a {\delta} Scuti variable component. The phased light curve
from Kepler space telescope presents a detached configuration. The binary
modelling indicates that the two component stars have almost the same radius
and may have experienced orbital circularization. Frequency analyses are
performed for the residual light curve after subtracting the binary variations.
The frequency spectrum reveals that one component star is a {\delta} Scuti
variable. A large frequency separation is cross-identified with the histogram
graph, the Fourier transform, and the echelle diagram method. The mean density
of the {\delta} Scuti component is estimated to be 0.09 g/cm3 based on the
large separation and density relation. Systems like EPIC 202843107 are helpful
to study the stellar evolution and physical state for binary stars.
