In this paper

a novel kind of algorithm

the quantum evolutionary strategies-QES

is proposed based on the combination of quantum theory and evolutionary theory.It is a kind of evolutionary strategies with the form of quantum chromosome

whose core lies on the concept and principles of quantum computing

such as qubits and superposition of states.By using qubit mutation

we can make full use of the information of the currently best individual to perform the next search

and use whole interference to avoid prematurity

so it has rapid convergence and good global search capacity.The paper not only proves the global convergence of the QES

but some simulated experimentats are given to prove its superiority to other algorithms.