From the perspective of ergonomics, the reasonable layout of tables and chairs should take into account that people walking by the table will not affect people who eat, and that people who walk will not have a kind of psychology: they are worried about touching the table (the tables in general canteens are very oily), so the table spacing in the canteen should be ensured to be greater than 760mm, because most people like to put their hands on the table when eating, and because of the length of the table, their elbows will leak out of the table and enter the passage area. The distance between the chair and the other chair can be kept at about 760 mm, and the school canteen is reasonable.

2. Man-machine analysis of desk and chair combination.

Under the constraint of saving space, the combination of dining tables is mostly four-person tables. If it is a table for two people, it will increase the number of aisles between the tables, and the width of the aisles will be determined according to the lateral size of the human body, which will waste a lot of space. Four-person conjoined dining tables and chairs and split dining tables and chairs for four people are obviously superior to couples tables in space.

3. Study on the layout of dining tables and chairs in canteens and fast food restaurants.

The distance between the dining table and the chair should conform to the principle of ergonomics. According to the size of human sitting posture, the distance between chair and table should not only conform to the size of human sitting posture, but also ensure that two people will not touch each other's legs when sitting face to face, which is between 580 mm and 730 mm.