By studying quantum state, quantum state spaces as well as multiple qubits of quantum mechanics, it is found that an active path finding robot can be designed on the basis of quantum mechanics. To begin with, quantum encoding, quantum logic gates, quantum logic circuit, quantum gate arrays and quantum parallelism are studied. Then a robot on the basis of quantum bits is designed. Finally, an active path finding algorithm on the basis of quantum fourier transforms and related pathing finding algorithm are found. Meanwhile, some examples and related analyses indicate that an active path finding robot on the basis of quantum mechanics is feasible.