Buddhist bells have been found during the South and North Dynasty after Buddhism entered China. There are two statements on the origin of Buddhist bells. One relates to the original sounding instrument of India, the other declares that Buddhist bells originate from the brass bells in pagodas. Both statements relate the origin of Buddhist bells to India. However, from the investigation of the shape and system of instruments, it has been proved that Buddhist bells originated in circular shape musical bells and imperial court bells in China. In addition, through the investigation of the siniticization of Buddhism, Buddhist bells actually subordinate the siniticization of Buddhism. The emphasis lies on the denotation of hitting the bell but not the instrument itself, that is, hitting the bell in Buddhism serves the function of ending suffering and grasping the truth. Nevertheless, this denotation has been hardly found in the three hundred Tang poems concerning Buddhist bells. This paper hypothesizes that the poet’s cognition and expression in Tang poetry of Buddhist bells stems from a more subjective perception but may not relate to Buddhist doctrine, which forms an interesting contrast.