Rice, tapioca, coconut, areacanut, rubber, cashew and banana are the most important agricultural products of the Thrissur Cochin . The most important crop of the district is paddy. In certain areas three crops are raised (Viruppu, Mundakan and Punja) in a year. One of the striking features in regard to agricultural operations in the district is the cultivation. Extensive low-level lakes in Thrissur and Mukundpuram taluks are artificially reclaimed and bunded. Tapioca is the food of the poor and the middle class. The reason for the large scale consumption of tapioca is attributing to its high calorific value. Coconut is one of the important garden crops of the district. Among condiments and spices the arecanut tree stands first. Poor farmers with small holdings are the cultivators of the crop.

Thrissur is a land of fruits. Perhaps no other district in the State grows a greater variety of fruits or has better facilities for horticulture. Plantain, jack fruits, mangoes, bread fruits, pineapples, etc., are grown in abundance in most parts of the district. Jack and mango trees are extensively grown in the gardens attached to houses. Cashew nut is cultivated in almost all parts of the district. The cultivation of rubber is popular.

The district affords the best example to the fact that a damp climate is not conductive to the growth of cattle. The indigenous breed of cattle is weak and stunted in growth.

Thrissur district has a long tradition in the field of fishing industry. If offers natural facilities for marine and inland fisheries. Its coast line is about 54 km. in length from Azhikode to Puthenkadappuram. Fishing is the main occupation of a large number of people. The main fishing castes are Valan, Aryan, Mukkuvan and Marakkan. Thrissur is one of the biggest fish market of Kerala. Fish in an important item in the diet of about 90% of the population. Oil sardines are used as manure. About 95% of the total catch is marketed within the district. The fishing industry thus makes a sizable contribution to the wealth of the district, and is the main source of income of a large section of the people inhabiting the coastal area. There are seven major fishing centres in the district viz., Azhikode, Nattika, Vadanappilli, Kadappuram, Blangad, Puthenkadappuram and Chettuva. The districts have 18 coastal fisheries villages and three inland fisheries villages. There is a Shrimp hatchery at Azhikode.