A plan to solve the problem of the overall definition, including the understanding of user requirements and the reality of the environment, from the three aspects of technical, economic and social factors and demonstrate the feasibility study of the software project, preparation of feasibility studies to explore the problem programs, and resources available (such as computer hardware, system software, manpower, etc.) costs, benefits and development progress can be made to estimate software development, develop an implementation plan to complete the development tasks. 2 analysis software requirements analysis is to develop a kind of software systems analysis and vision. It is a user needs to be Qucuqujing, Quweicunzhen correct understanding of software development courses, and then put it in software engineering development language (in the form of functional specification, ie, requirements specification) express process. The basic task of this phase is to identify problems and users together to solve software development outsourcing, the establishment of a logical model of software, written requirements specification document and finally get user acceptance. There are structural analysis methods, data flow diagrams and data dictionary main method and other methods of needs analysis. This phase of work is in accordance with the requirements of the requirements specification, design build architecture corresponding software systems, the entire system will break down into several sub-systems interface relationship or module definition subsystems or modules, specifically designed for each subsystem definition, writing software outline design and detailed design specification, database or data structure design specification software development flow chart, assembly and testing program. In the initial stage of any software or system development must fully grasp the needs of users, in order to be able to follow the system development process, what features should be implemented, which taken specifications and restrictions set priority to positioning. Systems engineers will eventually be completed accordingly design, on this basis for subsequent program development, system functionality and performance descriptions and restrictions to define. 5 The purpose of software testing is to test a smaller price discovery as many errors. The key to achieving this goal is to design a good test cases (test data and functions and the expected output form the test case). How to design a good test case, the key is to understand the test methods. There are different methods of test case design different test methods. Two commonly used test is the test object is a white box method source, based on the logic of the internal structure of the program to find software programming errors, structural errors and data errors. Structural errors, including logic, data flow, initialization error. The key use case design is based on the use cases covering fewer internal procedures as much as possible the logical result. White box and black box method method is based on the functional behavior of the software or software description, discovery interfaces, functions and structure of software errors. Wherein the interface errors include internal / external interfaces, resource management, integration, and system errors. The key black-box use case law is also designed with less use cases covering module output and input interfaces. Software Development Division | Donggang Software Development | HSBC and IT center provided by Shenyang abundance and IT center. Shenyang Feng and Information Technology Center (www.4000010001.com) strong, credible, in Shenyang, Liaoning e-commerce industry has accumulated a large number of loyal customers. The company better work attitude and continuous improvement and innovative ideas will lead HSBC IT center and you work into the brilliant, for a better future!