Haricot Bean is among the crucial food and export legume crops with extended marketing potential in Ethiopia. Likewise, it plays an important role in enhancing income and thereby ensuring the food security status of farm households in Tachgayint district of Amhara region Ethiopia. However, marketing challenges are critical to producer farmers’ decisions in the market. Aim of this study was to analyze market participation and outlet choice challenges. To draw data 207 Haricot Bean producer farmers selected using three-stage sampling techniques. Simple descriptive statistics, Heckman two-stage and multivariate Probit (MVP) models used to identify determinants of both market participation and market outlet choice decisions of the producers. The result shows about 82.6% of interviewed farmers have participated in selling Haricot Bean to market. The first stage of Heckman (probit) model result was found to be Haricot Bean producers increase the likelihood of participate in the market are have experience of farming, allocated more land for Haricot Bean, large number of oxen owned and received market information were affect positively and the rest participation on off/non-farm activities were negatively affected. The second Heckman (OLS) model result indicates the market participation extent increased by allocated more land for Haricot Bean, number of oxen owned, received agricultural training and received market information were found significant and positively affected. The multivariate probit result for Haricot Bean producers’ market outlet choice revealed a competitive relationship of wholesaler with collector, cooperative with collector and cooperative with wholesaler in the study area. Further, the model result also shows age of the household head, educational status of the household head, allocated land for Haricot Bean, agricultural training, distance to the market, membership of cooperative, participation of off and non-farm activities and access to market information were found to be significantly influencing the choice of households’ Haricot Bean market outlet. The study suggests strategies aiming for enhancing Haricot Bean market supply with appropriate market outlet choices should encourage farmers’ cooperative and linking them with terminal markets, enhancing yield, capacity building from production up to post-harvest handling, providing reliable and timely market information, improving poor road infrastructure need consider while developing strategies for the improvement of the marketing system.