影片通过男主人公巴维尔在对待爱情、婚姻，特别是对待“别人的孩子”的态度上的变化 ，表现了普通苏联人善良、美好的心灵和高尚的道德情操，提示了“被别人需要”也是种幸福的主旨。
Pyotr Glebov
father
Vera Alkhovskaya
mother
Aleksandr Mikhaylov
Pavel
Irina Ivanova
Polina
Mikhail Buzylyov-Kretso
Styopa
Pyotr Krylov
Pavlik
Aleksandr Pavlov
Sergey
Anatoliy Solonitsyn
artist
Mariya Andrianova
aunt Ustyusha
Svetlana Tormakhova
social service inspector
Leonard Varfolomeev
farm chairman
M. Richter
taxi driver
Tatyana Makhova
Provodnitsa vagona
Afanasi Kochetkov
Pavel's friend
