A shaft connecting structure comprising a first connector (1) and a second connector (2). The first connector (1) is snappingly connected with the second connector (2). The first connector (1) comprises a shaft body (101). A narrow-and-wide part (1011) is provided on the shaft body (101). The second connector (2) comprises a rotary cavity (201). An engaging opening (202) is provided at the upper part of the rotary cavity (201). The shaft body (101) is rotatably connected with the rotary cavity (201). The width of the narrow-and-wide part (1011) is less than the width of the engaging opening (202). The connecting structure, relying solely on structural engagement and positional relations of components, reliably connects components of a lamp housing while retaining a rotary function and allows concurrent separation of multiple shafts.
