The coefficient of a linear Stark shift of the 4 F 9/2 -4 I 15/2 transition of Er 3+ ion in Y 2 SiO 5 is measured (14.3 kHzV −1 cm ) by splitting the upper and lower levels of the transition by a pulsed electric field and measuring the splitting frequency from the period of beatings of the temporal form of a photon echo signal (stark photon echo beating method). The linear Stark coefficients of Er 3+ transitions in Y 2 SiO 5 have not been measured before, and this is a valuable result for a number of applications such as gradient echo memory, group velocity control via spectral hole burning, etc.