The topic of the thesis is marketing analyses in a selected family company. The aim of this work is to elaborate selected marketing analyses in the company PLANTO SK s.r.o., which operates via internet. The structure of the work is divided into five units. The theoretical part defines the starting points of the issue, defines marketing, its Internet form, as well as the form of business via the Internet. The marketing environment and individual marketing situation analyses are defined as well. Part of the practical part are the results of marketing analysis itself, the characteristics of the company and currently used marketing mix are defined in the introduction. Marketing analyses consist of analysing external and internal environment - STEP analysis, competition analysis is realized by Porter model and analysis of competition criteria, SWOT analysis and SEO analysis. Customer analysis is evaluated in terms of customer satisfaction, needs and expectations, and market segmentation is consequently deduced. The final analysis is the ABC analysis of product sales. The change in the marketing environment in connection with covid-19 is analyzed and compared over time on the basis of selected indicators. The practical importance of the work is contained in the final part - evaluation of the research results and expressing recommendations for improving the company's position on the market.