The invention provides a filter and water treatment equipment, and relates to the technical field of agricultural irrigation. The filter comprises a shell, a water inlet pipe, a pollution discharge assembly and a filtering assembly, wherein the pollution discharge assembly comprises a first pollution discharge pipe; the water inlet pipe and the first pollution discharge pipe are connected with the shell respectively; the filtering assembly comprises a first filtering component; the first filtering component is arranged in the shell; a first cavity is enclosed by the first filtering component; the water inlet pipe is communicated with the first pollution discharge pipe through the first cavity; a second cavity is formed between the shell and the first filtering component; a water outlet is formed in the shell and is communicated with the second cavity. The invention also provides water treatment equipment which adopts the filter. The filter provided by the invention cleverly converts the factor which causes that a filter screen is easy to damage into filtering power, and improves the cleaning efficiency and the properties; the water treatment equipment provided by the invention improves the filtering efficiency and the properties.