A method for treating surfaces of an electronic card using a plasma torch generating a stream of plasma, this card including multiple electronic components (C1a, C1b, C1c, C2a, C2b, C3a), the card having multiple surfaces to be treated that are positioned at various heights with respect to a reference plane (Ref) of the electronic card, at least some of these surfaces to be treated being formed on at least some of the components of the electronic card, characterized in that: - at least one zone (Zn) to be treated of the electronic card is determined, this zone (Zn) to be treated containing the surfaces to be treated; - an ideal working range (Pt) specific to the plasma torch is determined, this working range being localized with respect to a given point of this torch; and - using an algorithm run by a computer, strata (S1, S2, S3) that are parallel to said reference plane (Ref) of the card are determined, each of these strata (S1, S2, S3) containing at least one of the surfaces to be treated corresponding thereto, then a trajectory for the movement of said torch is generated such that when this movement trajectory is followed: - the surfaces to be treated are treated in a chronological order, consisting in treating all of the surfaces to be treated contained in a given stratum before starting to treat the surfaces to be treated contained in another of the given strata; and such that - for each given stratum, the surfaces to be treated contained in this given stratum are treated by moving the torch so that said given point of this torch exclusively follows a planar trajectory that is parallel to the reference plane (Ref) of the electronic card; and such that - at any given instant in time during the projection of the plasma stream onto one of the surfaces to be treated, there is a current portion of the surface to be treated receiving this plasma stream at this given instant in time that is exclusively placed in the predetermined ideal working range (Pt). - at least one zone (Zn) to be treated of the electronic card is determined, this zone (Zn) to be treated containing the surfaces to be treated; - an ideal working range (Pt) specific to the plasma torch is determined, this working range being localized with respect to a given point of this torch; and - using an algorithm run by a computer, strata (S1, S2, S3) that are parallel to said reference plane (Ref) of the card are determined, each of these strata (S1, S2, S3) containing at least one of the surfaces to be treated corresponding thereto, then a trajectory for the movement of said torch is generated such that when this movement trajectory is followed: - the surfaces to be treated are treated in a chronological order, consisting in treating all of the surfaces to be treated contained in a given stratum before starting to treat the surfaces to be treated contained in another of the given strata; and such that - for each given stratum, the surfaces to be treated contained in this given stratum are treated by moving the torch so that said given point of this torch exclusively follows a planar trajectory that is parallel to the reference plane (Ref) of the electronic card; and such that - at any given instant in time during the projection of the plasma stream onto one of the surfaces to be treated, there is a current portion of the surface to be treated receiving this plasma stream at this given instant in time that is exclusively placed in the predetermined ideal working range (Pt). - the surfaces to be treated are treated in a chronological order, consisting in treating all of the surfaces to be treated contained in a given stratum before starting to treat the surfaces to be treated contained in another of the given strata; and such that - for each given stratum, the surfaces to be treated contained in this given stratum are treated by moving the torch so that said given point of this torch exclusively follows a planar trajectory that is parallel to the reference plane (Ref) of the electronic card; and such that - at any given instant in time during the projection of the plasma stream onto one of the surfaces to be treated, there is a current portion of the surface to be treated receiving this plasma stream at this given instant in time that is exclusively placed in the predetermined ideal working range (Pt).