In this paper we will made a study of the Jacobi stability of Lu's circuit system using the geometric tools of the Kosambi-Cartan-Chern theory. In order to nd the Jacobi stability conditions, we will determine all ve invariants of the KCC-theory which express the intrinsic geometric properties of the system, including the deviation curvature tensor which determine the Jacobi stability of the system near equilibrium points.Bibliography [1] J. Lu, G. Chen, A New Chaotic Attractor Coined, Int. J. of Bif. Chaos, vol. 12, no. 03, 2002, pp. 659-661, https://doi.org/10.1142/S0218127402004620. [2] P. L. Antonelli, R. S. Ingarden, and M. Matsumoto, The Theories of Sprays and Finsler Spaces with Application in Physics and Biology, Kluwer Academic Publishers, Dordrecht/ Boston/London, 1993. [3] C. G. Bohmer, T. Harko and S. V. Sabau, Jacobi stability analysis of dynamical systems| applications in gravitation and cosmology, Adv. Theor. Math. Phys. 16 (4), 2012, pp. 1145{1196. [4] F. Munteanu, A. Ionescu, A Note on the Behavior of the Lu Dynamical System in a Slightly Simpli ed Version, IEEE Proc. of ICATE 2018, pp. 1-4, https://ieeexplore.ieee.org/document/8551467 [5] F. Munteanu, A. Ionescu, Analyzing the Nonlinear Dynamics of a Cubic Modi ed Chua's Circuit System, IEEE Proc. of ICATE 2021, pp. 1-6, https://ieeexplore.ieee.org/document/9465025