The invention discloses an operating mechanism for a manual transmission of an automobile. The mechanism comprises a gear-shifting shaft, a gear-selecting interlocking block, an elastic pin, a gear-shifting shifting block, a gear-shifting interlocking plate, a shell, a gear-selecting positioning seat and a gear-shifting positioning seat, wherein the gear-selecting interlocking block and the gear-shifting shifting block are fixedly connected with the gear-shifting shaft through the elastic pin respectively and are positioned on the outer side of the shell respectively; relative motion does not exist among the gear-selecting interlocking block, the gear-shifting shifting block and the gear-shifting shaft; and the gear-selecting positioning seat and the gear-shifting positioning seat are fixedly connected with the shell of the transmission respectively. A gear-selecting force-sensing block, an interlocking shifting block and a limit mechanism are integrated on the same part through a centralized design, so that the mechanism has a compact structure, a reasonable design, good gear-selecting handfeel and high comfort, is easy to assemble, reduces the processing cost of parts, saves raw materials, and realizes the functions of neutral gear positioning, gear-selecting return, gear-selecting force generation, gear-shifting force generation (for enhancing gear-shifting suction feeling) and the like. The invention is suitable to be used as an operating mechanism for the manual transmissions of various vehicles.