An external controller for the positioning, directional turning, and displacement of an in-vivo microminiature device, comprising a housing (3), magnets (4), and a control system. The magnets (4) are magnetic sensors or remote sensing magnetic induction coils provided at a plurality of positions on the housing (3). The control system comprises a wireless transmitter used for receiving and transmitting an in-vivo image, temperature, and physiological data information of a human body, and a magnetism regulator (1) for controlling the change of the magnetic fields and the magnetic forces of the various magnetic sensors or remote sensing magnetic induction coils, said magnetic sensors or remote sensing magnetic induction coils being provided on the housing (3). The housing (3) is provided with a handle (2), and the magnetism regulator (1) is provided on the handle (2). The housing (3) is circular, polygonal, or elongate. The handheld external controller implements remote control of an in-vivo medical microminiature device in a human body by changing the magnetic fields or the magnetic forces, thereby fixing the position of the in-vivo medical microminiature device, turning the direction thereof, or displacing the in-vivo medical microminiature device. The handheld external controller is simple in structure, can be operated flexibly and easily, and has low manufacturing and usage costs.Contrôleur utilisé à lextérieur destiné à localiser, guider et déplacer un micro-équipement logé dans un corps, lequel contrôleur comprend une enveloppe externe (3), un corps magnétique (4) et un système de commande, le corps magnétique (4) étant un capteur magnétique ou une bobine dinduction à télédétection susceptible de se trouver dans une pluralité demplacements sur lenveloppe externe (3), le système de commande renfermant un radio-émetteur destiné, dune part, à recevoir et transmettre les images et la température dun corps ainsi que les informations numériques sur le physique dun corp
