With the acceleration of pace of life and change of life style, the first demand of people on dietetic life is convenience. More and more Chinese consumers choose to have a meal outside (dining out) and ready-made meal (out-purchased & home eating) instead of home eating, including consumption on the way, delivery, take-out and packaging, etc. From 2013 to 2016, the delivery increases by 44%, and dining out increases by 10%. However, at the same time, the annual growth rate of food purchased for cooking at home is only 3%. The dining out and delivery has become the catering consumption habit of Chinese consumers. O2O(Online To Offline)means the combination of offline business opportunities and internet, making internet become the platform of offline transaction. O2O involves all fields of basic necessities and is the most intensive e-business model of current application. From the beginning of 2013, the Chinese O2O industry develops quickly. However, the burgeoning combination of E-commerce model and food catering (Tech + Food) has made the consumers to pursue the maximization of convenience demand. Therefore, the food delivered O2O platform service represents the way. Since 2014, Chinese food delivered O2O platform service market has maintained a strong increase. In 2014, the Chinese food delivered O2O platform service market scale is 97.51 billion Yuan. It is expected to exceed 200 billion Yuan in 2017. The high-rate development of food delivered O2O platform service and the overheating competition among merchants cause the decrease of service quality, which directly affects the customers’ satisfaction degree. However, the customers’ satisfaction degree is the core of food enterprise development. Thus, on the basis, the research mainly focuses on studying the present circumstances of Chinese food delivered O2O platform service, carrying out investigation on the customers satisfaction degree of food delivered O2O platform service, making analysis and hypothesis testing on data and making explanation and summary and proposing suggestions through SPSS, and finally carrying out summary of full text so as to point out the innovation point and inadequacy of research. It is necessary for improvement of Consumers satisfaction degree of food delivered O2O platform service. The study is totally divided into 6 chapters. In the Chapter I, the research purpose is raised and a summary and conclusion on Chinese and foreign prior study is carried out. In the Chapter II, from theoretical background, firstly, one carries out detailed investigation from the current situation of ready-made meal (out-purchased & home eating)and ready-made meal industry. In terms of ready-made meal, the earliest concept stems from Japan, and it is a presence of intermediate form differing from home eating (family consumption) and dining out (restaurant consumption except for home). It includes delivery, take-out and convenience fast food, etc. However, in America, Europe and Korea, etc, it is named Home Meal Replacement (HMR). Although scholars of various countries have no accurate definition on out-purchased & home eating and HMR, ready-made meal is closely related to people's life. Secondly, one carries out detailed research on the definition and development situation of O2O platform service. However, the text focuses on mobile phone user. Thus the appending specification is made on app in concept. In the third part, a theoretical survey is made on the customers’ satisfaction degree and the quality of service affecting customer satisfaction. In the Chapter III, the detailed development process and existing circumstances of Chinese food delivered O2O platform service is introduced, and the reason for explosive growth of Chinese food delivered O2O platform service is found out. Afterwards, a comparative analysis is carried out on Chinese top 3 food delivered O2O platform service. In the Chapter IV, the research assumption is raised and research model is established. For the research, the factors affecting customers satisfaction degree of food delivered O2O platform service is divided into online service quality (Platform design, intelligence quality, responsiveness and security) and offline service quality (Food products quality, staff quality, distribution quality, system quality). Supposing that the online service quality and offline service quality have a positive influence on the customers satisfaction degree and repurchase action. A data collection is carried out on Beijing and Shanghai mobile phone users through questionnaire. In Chapter V, one carries out detailed analysis on the data through spss, and carries out inspection on the assumption raised. From inspection, the 8 small projects of online service quality and offline service quality have obvious positive-(+) direction influence on the customers’ satisfaction degree and buying behavior, and on the other hand, the online security and offline food products quality and staffs and distribution quality, etc. prominently affect the customers’ satisfaction degree. Finally the Chapter VI focuses on research conclusion and presentation of inadequacy. From investigation and analysis, the power of consumption of Chinese consumers rises, and price sensitive turns into quality pursuit. The comprehensive improvement focusing on the security of food products provided by offline take-out merchants, the diversity of variety of dishes and distribution quality, attitude of staffs and many-sided services are required. In addition, there are higher requirements on the services provided by online platform, including security of platform clearance and popularity of platform, etc. However, though the research is the satisfaction survey of food delivered O2O platform service of ready-made meal industry of Chinese consumers, it is also limited to some extent because the first-tier cities like Beijing and Shanghai are chosen in terms of the serviceable range of delivered O2O platform service.