At present, agricultural production in China is in a period of transition, which has given rise to many problems. Eco-agriculture and tourism development is an important part of the mutual promotion and coordination between agriculture and tourism, as well as an important initiative to solve the massive loss of rural population, protect land resources, improve farmers' income and promote agricultural modernisation. Therefore, for China's agricultural and tourism development, it is necessary to further raise awareness of the protection of the natural environment, adhere to the path of sustainable development, follow the laws of nature in development, reasonably develop and utilise natural resources and improve resource utilisation, and at the same time, respect the harmonious relationship between man and nature. The main objective of this paper is to analyse and study the natural environment protection issues in ecological agriculture and tourism development. Based on the basic theoretical content, this paper analyses the mechanism of integration of agriculture and tourism in the field and garden complex, defines the scope of protection and development by drawing a protection red line at the early stage of planning, protects the arable land resources and controls the development of the field and garden complex. The site's texture is characterised by the use of local economic crops and native plants with their own characteristics and advantages as landscape materials to create a rustic landscape appearance.