Disclosed is an electric-drive fracturing semitrailer with a frequency conversion all-in-one machine. The electric-drive fracturing semitrailer comprises a semitrailer body (1), a plunger pump (4), an electric motor and a radiator (5). The plunger pump (4), the electric motor and the radiator (5) are arranged on the semitrailer body (1); the electric motor is a frequency conversion all-in-one machine (3); in terms of number, there is one of each of the frequency conversion all-in-one machine (3), the plunger pump (4) and the radiator (5); the frequency conversion all-in-one machine (3) is arranged on the semitrailer body (1); the frequency conversion all-in-one machine (3) is connected to the plunger pump (4); and the radiator (5) cools lubricating oil of the plunger pump (4). According to the solution, an electric motor and a frequency converter are designed to be integral, and the amount of space occupied by an electric motor and a frequency converter in the prior art is thus effectively reduced, such that the size of an upper part of the electric-drive fracturing semitrailer is smaller, transportation is more convenient, and the amount of space for installing other devices on a semitrailer body can be guaranteed.
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