The invention discloses an electrical tomography artifact suppression image reconstruction method. The method comprises the following steps: (1) obtaining a relative boundary measurement value vectorbmeas and a sensitivity matrix A required by reconstruction according to a measured field domain; (2) setting initialization parameters; (3) updating an adaptive regularization parameter lambda k; (4)updating the auxiliary variable pk + 1; (5) updating the weight factor omega k; (6) updating the auxiliary variable qk + 1; (7) updating the auxiliary variable rk + 1; (8) updating the conductivity distribution gk + 1; (9) newly adding Gamma < 1 > T, Gamma < 2 > T and Gamma < 3 > T of the Cantonese multiplier; (10) judging whether the iteration meets an iteration termination condition or k is less than or equal to kmax, if so, terminating the iteration, and carrying out the next operation; if not, k is set to be equal to k + 1, the step (3) is executed again, and iterative solution is continued; and (11) imaging according to the gray value obtained by final solution. According to the invention, the step artifact can be effectively reduced, the noise immunity is improved, the algorithm structure is simplified, and the applicability of the algorithm is improved.