Concentrations of10Be were measured in 23 lava samples representing historically and14C dated eruptions of major Kurile and Kamchatka volcanoes. We report 2.2–7.9 · 106at/g of10Be for Kuriles and in most cases less than 1.2 · 106at/g for Kamchatka. Thus Kurile segment of the Kurile-Kamchatka arc system features the same isotopic pattern as the Aleutians and some continental arcs like Central America and the Andes. The obtained results confirm previously drawn conclusion that the scale of sediment incorporation in Kurile magmas is not large thought the process itself is quite real.