Disclosed are a pushing apparatus (40) and conveying system (100) for an interventional medical instrument (200). By covering a thermoplastic elastomer on the surface of a steel cable (41) to form an overlay film (412) the support nature of the steel cable (41) is improved when guaranteeing the flexibility thereof so that it is difficult for the interventional medical instrument (200) to deviate from a predetermined position when conveying the interventional medical instrument (200) the operation time is shortened and the operation risk of patients is reduced. Meanwhile in the conveying system (100) a sealing member (52) is provided in an inner cavity of a hemostasis valve body (51) to match the overlay film (412) of the steel cable (41) so that the distal end of the hemostasis valve body (51) is isolated from the outside world and the release effect of the medical instrument (200) can be assessed by means of radiography before the medical instrument (200) is released from the steel cable (41) in operation thereby effectively avoiding the harm to patients caused by improper selection of the model or adjustment of the release position.
