Provided in the present invention are a flexible electrochemical electrode, a subcutaneous continuous glucose monitoring sensor equipped with the electrochemical electrode, and a preparation method therefor. The electrode directly uses gold layers (2, 20) on both sides of a chemically plated film, respectively as a working electrode (A) and a reference-counter electrode (B), so as to form an electrochemical two-electrode system. Petaloid platinum nanoparticles are electrodeposited on a surface of the configured working electrode (A) as a catalytic layer (3) a carbon nanotube/Nafion mesh layer (4) functions as an interference layer, and is formed thereon with an enzyme biochemical sensitive layer (5) by means of electrostatic adsorption, after crosslinking and curing in glutaraldehyde, polyurethane mass transfer is coated to limit a protection layer (6), so as to prepare a flexible continuous glucose monitoring sensor. The sensor does not require photolithography, screen printing or other technologies to construct an electrochemical electrode system. The present invention effectively simplifies the processing technology, can easily achieve large-scale production and reduce production costs and meanwhile, the present invention has characteristics such as a wide linear range, low detection limit, powerful anti-interference capacity, high response sensitivity and long-term stability.La présente invention concerne une électrode électrochimique flexible, un capteur de surveillance continue du glucose sous-cutané équipé de lélectrode électrochimique, et un procédé de préparation associé. Lélectrode utilise directement des couches dor (2, 20) sur les deux côtés dun film chimiquement plaqué, respectivement en tant quélectrode de travail (A) et de contre-électrode de référence (B), de façon à former un système à deux électrodes électrochimiques. Des nanoparticules de platine pétaloïdes sont déposées par électrodéposition sur une surface de lélectrode de travail (A) configurée
