An electronic control device comprising: a circuit wiring board in which a wiring pattern (31, 31A, 31B) is formed on a base metal, the wiring pattern including a pair of patterns (32a, 32b) having a large area, a pair of lands (33a, 33b) arranged between the pair of patterns (32a, 32b) at a predetermined interval and having an area smaller than that of the pair of patterns (32a, 32b) having the large area, and a pair of wiring portions (34a, 34b) connecting the pair of lands (33a, 33b) and the pair of patterns (32a, 32b) respectively, wherein a respective one of the pair of wiring portions (34a, 34b) connects a respective land of the pair of lands (33a, 33b) with a respective pattern (32a, 32b) of the pair of patterns (32a, 32b); and an electronic component having a transverse direction (Wc) and a longitudinal direction (Lc) which is arranged normal to the transverse direction, wherein the electronic component has electrodes (41a, 41b) having a predetermined length and a predetermined width, which electrodes (41a, 41b) are arranged in one end and the other end in the longitudinal direction respectively, wherein a respective electrode (41a, 41b) of the electronic component is connected to a respective land (33a, 33b) of the pair of lands (33a, 33b), wherein the pair of wiring portions (34a, 34b) are arranged so that each of a respective center (Xa, Ya) of a connection portion (53, 56) of a respective wiring portion (34a, 34b) connecting a respective wiring portion (34a, 34b) of the pair of wiring portions (34a, 34b) to a respective land of the pair of lands (33a, 33b) is disposed at a position that is outside of both a region that is formed by an indefinite extension of the predetermined width (Wc) of the electronic component in the longitudinal direction of the electronic component and a region that is formed by an indefinite extension of the predetermined length (Lc) of the electronic component in the transverse direction of the electronic component, wherein the pair of the wiring portions (34a, 34b) are formed to be line-symmetric with each other with respect to the center line extending in the transverse direction of the electronic component, characterized in that the pair of wiring portions (34a, 34b) respectively include a straight line portion and an inclined portion, the straight line portion extending from the connection portion with the respective lands (33a, 33b) in the longitudinal direction of the electronic component, and the inclined portion being arranged to continue from the straight line portion and connecting the respective pattern (32a, 32b) and land (33a, 33b) to each other, wherein the inclined portion is inclined in the direction of gradually departing from the respective land (33a, 33b) toward the pattern (32a, 32b). a circuit wiring board in which a wiring pattern (31, 31A, 31B) is formed on a base metal, the wiring pattern including a pair of patterns (32a, 32b) having a large area, a pair of lands (33a, 33b) arranged between the pair of patterns (32a, 32b) at a predetermined interval and having an area smaller than that of the pair of patterns (32a, 32b) having the large area, and a pair of wiring portions (34a, 34b) connecting the pair of lands (33a, 33b) and the pair of patterns (32a, 32b) respectively, wherein a respective one of the pair of wiring portions (34a, 34b) connects a respective land of the pair of lands (33a, 33b) with a respective pattern (32a, 32b) of the pair of patterns (32a, 32b); and a pair of patterns (32a, 32b) having a large area, a pair of lands (33a, 33b) arranged between the pair of patterns (32a, 32b) at a predetermined interval and having an area smaller than that of the pair of patterns (32a, 32b) having the large area, and a pair of wiring portions (34a, 34b) connecting the pair of lands (33a, 33b) and the pair of patterns (32a, 32b) respectively, wherein a respective one of the pair of wiring portions (34a, 34b) connects a respective land of the pair of lands (33a, 33b) with a respective pattern (32a, 32b) of the pair of patterns (32a, 32b); and an electronic component having a transverse direction (Wc) and a longitudinal direction (Lc) which is arranged normal to the transverse direction, wherein the electronic component has electrodes (41a, 41b) having a predetermined length and a predetermined width, which electrodes (41a, 41b) are arranged in one end and the other end in the longitudinal direction respectively, wherein a respective electrode (41a, 41b) of the electronic component is connected to a respective land (33a, 33b) of the pair of lands (33a, 33b), wherein the pair of wiring portions (34a, 34b) are arranged so that each of a respective center (Xa, Ya) of a connection portion (53, 56) of a respective wiring portion (34a, 34b) connecting a respective wiring portion (34a, 34b) of the pair of wiring portions (34a, 34b) to a respective land of the pair of lands (33a, 33b) is disposed at a position that is outside of both a region that is formed by an indefinite extension of the predetermined width (Wc) of the electronic component in the longitudinal direction of the electronic component and a region that is formed by an indefinite extension of the predetermined length (Lc) of the electronic component in the transverse direction of the electronic component, wherein the pair of the wiring portions (34a, 34b) are formed to be line-symmetric with each other with respect to the center line extending in the transverse direction of the electronic component,