A working vehicle, comprising: an engine; a bonnet which covers the engine; an operation part; a steering handle of the operation part; a power steering controller unit to which the steering handle is joined; and plural oil-pressure hoses joined to the power steering controller unit, characterized in that a front-and-rear direction is a movement direction on an occasion when the working vehicle moves straight on, and the working vehicle comprises: a partition plate which separates the engine and the operation part; a fuel tank with the partition plate being arranged between the engine and the fuel tank with reference to the front-and-rear-direction; a pedestal on which the power steering controller unit is placed; and a supporting pipe member which is connected to a left side and a right side of the pedestal so as to support the pedestal, and extends in an up-and-down direction, wherein an oil-supplying port is formed on an upper-face of a fuel tank convex part of the fuel tank which protrudes to a front side, where a fuel cap of the oil-supplying port is arranged in a notch part formed at an upper-face of the bonnet, the oil-pressure hoses include: a power steering hose through which oil goes that goes into the power steering controller unit; a return hose through which oil goes that has gone out from the power steering controller unit; and cylinder hoses (204L, 204R) through which oil goes at time of right-turn execution or time of left-turn execution, on a face of the fuel tank reverse to a face of the fuel tank which faces the partition plate, a concave part through which the oil-pressure hoses pass is formed so as to extend in the up-and-down direction, in the concave part, the power steering hose, the return hose, and the cylinder hoses (204L, 204R) are arranged. an engine; a bonnet which covers the engine; an operation part; a steering handle of the operation part; a power steering controller unit to which the steering handle is joined; and plural oil-pressure hoses joined to the power steering controller unit, characterized in that a front-and-rear direction is a movement direction on an occasion when the working vehicle moves straight on, and the working vehicle comprises: a partition plate which separates the engine and the operation part; a fuel tank with the partition plate being arranged between the engine and the fuel tank with reference to the front-and-rear-direction; a pedestal on which the power steering controller unit is placed; and a supporting pipe member which is connected to a left side and a right side of the pedestal so as to support the pedestal, and extends in an up-and-down direction, wherein an oil-supplying port is formed on an upper-face of a fuel tank convex part of the fuel tank which protrudes to a front side, where a fuel cap of the oil-supplying port is arranged in a notch part formed at an upper-face of the bonnet, the oil-pressure hoses include: a power steering hose through which oil goes that goes into the power steering controller unit; a return hose through which oil goes that has gone out from the power steering controller unit; and cylinder hoses (204L, 204R) through which oil goes at time of right-turn execution or time of left-turn execution, on a face of the fuel tank reverse to a face of the fuel tank which faces the partition plate, a concave part through which the oil-pressure hoses pass is formed so as to extend in the up-and-down direction, in the concave part, the power steering hose, the return hose, and the cylinder hoses (204L, 204R) are arranged. a partition plate which separates the engine and the operation part; a fuel tank with the partition plate being arranged between the engine and the fuel tank with reference to the front-and-rear-direction; a pedestal on which the power steering controller unit is placed; and a supporting pipe member which is connected to a left side and a right side of the pedestal so as to support the pedestal, and extends in an up-and-down direction, wherein an oil-supplying port is formed on an upper-face of a fuel tank convex part of the fuel tank which protrudes to a front side, where a fuel cap of the oil-supplying port is arranged in a notch part formed at an upper-face of the bonnet, the oil-pressure hoses include: a power steering hose through which oil goes that goes into the power steering controller unit; a return hose through which oil goes that has gone out from the power steering controller unit; and cylinder hoses (204L, 204R) through which oil goes at time of right-turn execution or time of left-turn execution, on a face of the fuel tank reverse to a face of the fuel tank which faces the partition plate, a concave part through which the oil-pressure hoses pass is formed so as to extend in the up-and-down direction, in the concave part, the power steering hose, the return hose, and the cylinder hoses (204L, 204R) are arranged.