This research discusses the major ways of expressing reciprocal situations in Taiwan Sign Language (TSL). The first question is about the reciprocal expressions with verbs in TSL. In spoken languages, verbs are usually marked for reciprocity by affixation or verbal reduplication. The goal of this issue is to find out how TSL code reciprocity on verbs. The result shows that the multiple articulators and the use of signing space in sign language make contributions to the reciprocal modification of the verbs in TSL. The second question is concerned with the reciprocal markers in TSL. Across spoken languages, two different markers are found to be interchangeable or co-occurring with each other. The purpose here is to find out how reciprocal markers are used with the verbs in reciprocal modifications in TSL. The result shows that the employment of a reciprocal marker is essential in some constructions and optional in others. The third question discusses about the reciprocal verbs in TSL. In spoken languages, reciprocal verbs do not allow to co-occur with any reciprocal markers. The goal here is to find out how reciprocal verbs behave in a reciprocal construction in TSL. The result shows that reciprocal verbs do not take any reciprocal markers in TSL. In addition, the verbs are signed inconsistently in constructions.