A pluggable optical transceiver module for being plugged in a housing is provided. The housing has a cover and an elastic piece, and the cover has an accommodating space. One end of the elastic piece is connected to the cover while the other end has a first fastening portion. The first fastening portion is located on one side of the accommodating space. The pluggable optical transceiver module comprises a base and a sliding member. The base comprises a base body and a second fastening portion. The base body has a guide surface, and the second fastening portion is next to the guide surface. The base is for being plugged in the accommodating space, and the second fastening portion is fastened with the first fastening portion. The sliding member comprises a body section and a push section connected to each other. The body section is slidably disposed on the base.