diff --git a/src/eid/is.ts b/src/eid/is.ts
index a6ee10d..f56dd16 100644
--- a/src/eid/is.ts
+++ b/src/eid/is.ts
@@ -18,6 +18,7 @@ export const len_msg = 2048 * 8
 export const len_rec_frm = 2048 * 8
 export const len_rec_to = 64
 export const len_rec_now = 1024
+export const len_aug = 64
 export const len_jwt = 512
 
 export function is_lim(
diff --git a/src/pra/put.ts b/src/pra/put.ts
index 2333b77..be2ab13 100644
--- a/src/pra/put.ts
+++ b/src/pra/put.ts
@@ -1,4 +1,12 @@
 import type { Agd, Aut, Cdt, Dbt, Ern, Msg, Soc, Usr } from "../eid/typ.ts"
+import type { Pas } from "./pas.ts"
+import { Ret, is_put } from "./can.ts"
+import { coll } from "../eid/db.ts"
+import { is_lim, len_aug } from "../eid/is.ts"
+import { usr_u } from "../eid/usr.ts"
+import { soc_u, soc_d } from "../eid/soc.ts"
+import { agd_d, agd_u } from "../eid/agd.ts"
+import { cdt_u, rec_d, rec_r, rec_s } from "../eid/rec.ts"
 
 // 更新操作
 
@@ -91,3 +99,53 @@ export type Put = {
 	wsl: Aut["wsl"],
 	lit: Aut["lit"],
 }
+
+export type PutRet = {
+	usr: Ret<typeof usr_u>,
+	soc: Ret<typeof soc_u>,
+	agd: Ret<typeof agd_u>,
+	cdt: Ret<typeof cdt_u>,
+}
+
+export async function put(
+	pas: Pas,
+	p: Put,
+) {
+	if (!is_put(pas, p)) return null
+	const now = Date.now()
+	switch (p.put) {
+		case "usr": return usr_u(p.usr, { $set: { nam: p.nam, adm1: p.adm1, adm2: p.adm2, msg: p.msg } })
+		case "soc": {
+			if ("nam" in p) return soc_u(p.soc, { $set: { nam: p.nam, adm1: p.adm1, adm2: p.adm2, sec: p.sec } })
+			else if ("del" in p) return soc_d(p.del)
+			else if ("msg" in p) return soc_u(p.soc, { $set: { msg: p.msg } })
+			else if ("agr" in p) return soc_u(p.soc, { $set: { agr: { msg: p.agr, utc: p.agr.length > 0 ? now : 0 } } })
+			break
+		} case "agd": {
+			if ("del" in p) return agd_d(p.del)
+			else if ("nam" in p) return agd_u(p.agd, { $set: { nam: p.nam, adm1: p.adm1, adm2: p.adm2, msg: p.msg } })
+			break
+		} case "cdt": {
+			if ("del" in p) return rec_d(coll.cdt, p.del)
+			else if ("aug" in p) return cdt_u(p.aug, { $push: { aug: { msg: p.msg, amt: p.amt, utc: now, usr: pas.usr } } })
+			else if ("dim" in p) return cdt_u(p.dim, { $pop: { aug: 1 } })
+			else if ("agr" in p) return cdt_u(p.agr, { $set: { "utc.agr": now } })
+			else if ("mov" in p) {
+				const [frm, to] = [pas.cdt.find(c => c._id.soc == p.mov.soc), await rec_r(coll.cdt, { _id: p.mov }, { now })]
+				if (!frm || !to || !is_lim(Math.max(frm.aug?.length ?? 0, to.aug?.length ?? 0), len_aug - 1)) return null
+				const aug = frm.aug ? frm.aug.reduce((a, b) => a + Math.min(b.amt, 0), frm.amt) : frm.amt
+				const [dbt] = await rec_s(coll.dbt, { usr: frm._id.usr, soc: frm._id.soc }, { frm: frm.utc.eft })
+				if (aug >= (dbt ? dbt.amt : 0) + p.amt) {
+					const f = await cdt_u(frm._id, { $push: { aug: { msg: p.msg, amt: -p.amt, utc: now, usr: pas.usr } } })
+					if (f) return cdt_u(to._id, { $push: { aug: { msg: p.msg, amt: p.amt, utc: now, usr: pas.usr } } })
+				}
+			} else if ("quo" in p) {
+				const c = pas.cdt.find(c => c._id.soc == p.quo)
+				if (c && is_lim(c.aug?.length ?? 0, len_aug - 1))
+					return cdt_u(c._id, { $push: { aug: { msg: p.msg, amt: 0, utc: now, usr: pas.usr } } })
+			}
+			break
+		}
+	}
+	return null
+}