Share market is often changing. Share price will often change due to market environment factor influence, e.g. competitors, strategy change, reorganization, sale growth or reducing etc. different factors. How share buyers can predict share price whether it will rise or reduce in short time. Why can share price be influenced by insurance need? In this book, I shall indicate some external environment factors and company internal environment factors to explain how and why they will possible influence any company share price changes more easily. Readers can learn some useful knowledge to attempt to predict whether these factors can influence share price changes more easily in possible. Evaluation to any shares prices why and how and when they change, you can have more confidence to earn share profit in investment market.