I. INTRODUCTION With the development of our country's industry, the scale of many enterprises has been continuously expanded, and the number of boilers providing power sources has also increased. However, there are very few proficient proficiency in boilers in the non-boiler industry. Those proficient in boiler auxiliaries Less, which gives enterprises in the selection of boiler auxiliary machinery to bring some difficulties, in order to avoid the selection of equipment in the practical application will not be a big deviation, the following only to the boiler feed pump several proposed Simple and applicable methods and precautions. Second, the boiler feed pump to determine the parameters (1) to the pump flow calculation Q = k (Q1 + Q2) Where: Q-boiler feed pump flow, m3 / h; Q1-total boiler water supply for the maximum steam load, m3 / h; Q2 - other water consumption, such as continuous sewage, regular sewage and desuperheater, m3 / h; k-backup factor 1.1 ~ 1.2. (2) Boiler feed pump head calculation H = H1 + H2 + H3 + H4 Where: H-boiler feed pump head, m; More Search Keywords: water pump