Every organizations need have excellent salespeople to help them to promote their products to sell in order to achieve sale growth. In fact, one supermarket stock keeper or one restaurant waitor, their jobs can be salespeople duty, if one client enquires the stock keeper whether is the food location or any stocks are existence in supermarket. If he can answer enquiries immediately. Then, he can promote the kind of brand food to sell easily. If the restaurant client enquires the waitor that the cooker needs to cook how long time to finish the kind of food, then he can also promote the kind of food to let the client to chooce to eat easily. So, learning salespeople sale psychology and skill , which is important to influence any businesses successes. In my this book, I shall explain how to know salespeople psychology and every salesperson's strengths or weaknesses of sales skills, in order to find whether whom has which kinds of weaknesses to his/her sale skill to improve. I also indicate any actual business organizations to let readers to evaluate whether their poor sales teams' sale skills , it is one major factor to influence their long term sale growth in success.