Disclosed is an ultrasound imaging device (100), an ultrasound image enhancement method and a guided puncture display method. The ultrasound imaging device (100) comprises an ultrasound probe (110), a transmitting/receiving control circuit (120), a data processor (130) and a display (140). The transmitting/receiving control circuit (120) controls the ultrasound probe (110) so that same sends a first ultrasound wave and a second ultrasound wave to a target of interest in biological tissue (160), and acquires a first echo signal and a second echo signal, wherein the first ultrasound wave is used for detecting an internal tissue structure of the target of interest, and the second ultrasound wave is used for detecting an object which is to be subjected to enhancement display and is punctured into the biological tissue (160). A data processor (130) generates, according to the first echo signal, a first ultrasound image, and generates, according to the second echo signal, a multi-frame second ultrasound image, and then acquires, according to the second ultrasound image and the first ultrasound image, a composite image of the target of interest. Since an ultrasound image of an object to be subjected to enhancement display is detected and acquired independently, it is guaranteed that the object which is to be subjected to enhancement display and is entered in an oblique direction is as clear as an internal tissue structure.La présente invention concerne un dispositif d'imagerie ultrasonore (100), un procédé d'amélioration d'image ultrasonore et un procédé d'affichage de perforation guidée. Le dispositif d'imagerie ultrasonore (100) comprend une sonde à ultrasons (110), un circuit de commande d'émission/réception (120), un processeur de données (130) et un affichage (140). Le circuit de commande d'émission/réception (120) commande la sonde à ultrasons (110) de telle sorte que celle-ci envoie une première onde ultrasonore et une seconde onde ultrasonore vers une cible d'intér
