A steering apparatus comprising: a steering shaft capable of attaching to a steering wheel at a rearward end of the steering shaft with respect to a vehicle body; a steering column that rotatably holds the steering shaft inside thereof and moves frontward with respect to the vehicle body upon a secondary collision; a vehicle-mounting bracket that holds the steering column and moves frontward with respect to the vehicle body together with the steering column while collapsing upon the secondary collision; a couple of capsules that are disposed in a width direction with respect to the vehicle body, and configured to be fixed to the vehicle body, and on which the vehicle-mounting bracket is attached so as to hold the vehicle-mounting bracket to the vehicle body, and configured to allow the vehicle-mounting bracket to detach from the vehicle body while absorbing a predetermined impact energy upon the secondary collision; a fixed bracket that is attached to the vehicle-mounting bracket and configured to be fixed to the vehicle body and to remain fixed to the vehicle body upon the secondary collision; and a guide mechanism (62, 71) that guides the movement of the vehicle-mounting bracket upon the secondary collision; wherein the guide mechanism (62, 71) comprises a guide pin fixed to the vehicle-mounting bracket, and a guide hole that is formed on the fixed bracket and is slidably engaged with the guide pin in the moving direction of the vehicle-mounting bracket; and the fixed bracket is attached to the vehicle-mounting bracket by slidably engaging the guide pin to the guide hole; characterized by: a movement-preventing mechanism (24, 64, 65) for preventing the fixed bracket from moving with respect to the vehicle-mounting bracket before assembling the steering apparatus onto the vehicle body; wherein the movement-preventing mechanism includes at least one of the couple of capsules, and an engaging portion (64, 65) that is formed on the fixed bracket and engaged with said at least one of the couple of capsules; and said engaging portion, engaging with said at least one of the capsules, prevents the fixed bracket from moving in the frontward, rearward and width directions with respect to the vehicle body and from rotating around the guide pin. a steering shaft capable of attaching to a steering wheel at a rearward end of the steering shaft with respect to a vehicle body; a steering column that rotatably holds the steering shaft inside thereof and moves frontward with respect to the vehicle body upon a secondary collision; a vehicle-mounting bracket that holds the steering column and moves frontward with respect to the vehicle body together with the steering column while collapsing upon the secondary collision; a couple of capsules that are disposed in a width direction with respect to the vehicle body, and configured to be fixed to the vehicle body, and on which the vehicle-mounting bracket is attached so as to hold the vehicle-mounting bracket to the vehicle body, and configured to allow the vehicle-mounting bracket to detach from the vehicle body while absorbing a predetermined impact energy upon the secondary collision; a fixed bracket that is attached to the vehicle-mounting bracket and configured to be fixed to the vehicle body and to remain fixed to the vehicle body upon the secondary collision; and a guide mechanism (62, 71) that guides the movement of the vehicle-mounting bracket upon the secondary collision; wherein the guide mechanism (62, 71) comprises a guide pin fixed to the vehicle-mounting bracket, and a guide hole that is formed on the fixed bracket and is slidably engaged with the guide pin in the moving direction of the vehicle-mounting bracket; and the fixed bracket is attached to the vehicle-mounting bracket by slidably engaging the guide pin to the guide hole; characterized by: a movement-preventing mechanism (24, 64, 65) for preventing the fixed bracket from moving with respect to the vehicle-mounting bracket before assembling the steering apparatus onto the vehicle body; wherein the movement-preventing mechanism includes at least one of the couple of capsules, and an engaging portion (64, 65) that is formed on the fixed bracket and engaged with said at least one of the couple of capsules; and said engaging portion, engaging with said at least one of the capsules, prevents the fixed bracket from moving in the frontward, rearward and width directions with respect to the vehicle body and from rotating around the guide pin. a movement-preventing mechanism (24, 64, 65) for preventing the fixed bracket from moving with respect to the vehicle-mounting bracket before assembling the steering apparatus onto the vehicle body; wherein the movement-preventing mechanism includes at least one of the couple of capsules, and an engaging portion (64, 65) that is formed on the fixed bracket and engaged with said at least one of the couple of capsules; and said engaging portion, engaging with said at least one of the capsules, prevents the fixed bracket from moving in the frontward, rearward and width directions with respect to the vehicle body and from rotating around the guide pin.