We all konw mathematics is a subject of study in number,structure change and space model.The application of mathenatical is very important.The establishment of mathematical medal in applied mathematics is a very important part. In daily life ,it seems that the use of mathematics is simply a simple operation. But in fact ,in the pursuit profit maximization in sales,we use mathematics to pursue maxium value. Using the method of modern mathematics,to study marketing problems .In the marketing of the establishment of mathematical model,a list of survey drawing charts for statistics ,the use of mathematic formulas for complex calculations etc. Our presentation includes three parts,one is mathematics function using in marketing,two is linear programming in market,three is summary of the examples. Mathematics has many applications in business and it is really functional. We can maximize our profits and improve our sales plan if we make full use of math. Then I and my parter will talk about two simple examples. The following is the first example, When one goods costs 10 yuan,we can sell 500 commodities.If the price of the goods increase 1 yuan.the quantity of good will decrease 10 commodities.then when how large is the price of the goods,we can have the largest profit. Suppose the increased price is x,then the commodities is (500-10x), The price is (10+x) yuan,so the total profit is (500-10x)(10+x)= -10(x-20)(x-20)+9000. So when x=20,we can get the maximum profit. The following is the second example. There is a hardware manufacturers. They have 500 screws and 400 nuts. Per product A needs one screws and two nuts and per product B needs two screws and one nut. According to the market prices ,one product A sells 2 dollar, and one product B sells 3 dollar. Then, how can we distribute the material to maximize our profits? Suppose A is x,B is y,the profit is z.then the profit is z=2x+3y. The condition we know, x>0; y>0; x+2y<500; 2x+y<400; So when x=100,y=200,we can get the max profit . the above two problems are simple for us .But the mathematics behind the problem can reflect some basic mathematicial thoughts.the first one use mathematical function which is very useful and important to sovle the problem.and the second is the establishment of mathematical model. In a word,mathematics comes from our daily life ,and it can help us make some problems more easier. The application of mathematics in marketing is very common,It is a combination of both,Let make math and Marketing more long-term development!