The present study was conducted in Kanpur Nagar district of Uttar Pradesh with 60 mushroom growers selected from five villages and categorized as small, medium and large based on wheat straw used by them mainly to study the marketing practices and channels involved in the marketing of mushroom and to estimate the selecting costs, margins and price spread. The study reveals that women co-operative society was the most important agency in the marketing of mushroom. Average quantity sold on perform basis was 6.17 quintals. Half of the producer – sellers preferred to sell mushroom in 1 to 2 quintals size plot. Mushroom quantity (about 66 per cent) of mushroom was sold within the village by majority of producer-sellers (about 70 per cent). Three channels were identified in the marketing of mushroom. Producer’s share in consumer’s rupee was the highest (98.53 per cent) in channel-1 (farmer-consumer). Retailer earned to maximum marketing margin (12.89 per cent) in the marketing of mushroom.