1. If it is an entrepreneurial stage, the first three items should not be too large. Because the first three projects have the function of testing water, if the time span is increased, employees in the wait-and-see stage will mistakenly think that the implementation of the six horse-fitting activities is unfavorable. The project with the execution time of 65438+ 10-3 months is ideal, but it is best to track 1 year or more until the end of the product life cycle.

2. If it is in a super-large enterprise, the process is very complicated and there are many designers, it is recommended that the project time be no less than 6- 12 months. The project itself is very complicated, and a lot of time is needed in the early measurement and analysis stage. In order to ensure that the data collection is in place and the analysis is accurate and thorough, the project team has to spend some time. So too short a time is very unfavorable to the normal progress of the project.

3. Usually, in the project cost budget and accounting, time and labor need to be calculated. Generally in human units. It is not accurate to calculate simply by time span.

4. If the project is large, it can be broken down into several small projects and implemented one by one. Here, we should pay attention to using critical path analysis to estimate the sequence of projects. The advantage of this is that in enterprises with very tight project budgets, if the first few projects are improved to produce "saving capital flow", they can be used to win more budgets, so that the projects can choose better schemes and obtain better implementation results.