The invention discloses a manual lifting adjustment device with double pawl driving and brake block interchangeability. The manual lifting adjustment device comprises a handle plate (1), a mounting plate (2), a rotating plate (3), a left pawl (4), a right pawl (41), an inner gear driver plate (5), a brake block (6), a snap ring A (7), a snap ring B (71), a driving cam (8), a casing (9), a central shaft (10), an output gear (11), a return spring (12) and an end sleeve (13). According to the manual lifting adjustment device disclosed by the invention, by using the interchangeability of the brake block, the error of the assembly is avoided and the qualification rate of products is improved; the left pawl and the right pawl are respectively and separately in meshed connection with the inner gear driver plate to transmit the torque, so that the defect that the tooth sliding fault easily occurs in the integral pawl is overcome and the work reliability is improved, and further the manual lifting adjustment device for an automobile seat achieves the aims of improving the reliability, simplifying the structure, reducing the size and the weight and reducing the cost.